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<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>

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<LI><A NAME="tex2html339"
  HREF="node5.html#SECTION00510000000000000000">SeqClear</A>
<LI><A NAME="tex2html340"
  HREF="node5.html#SECTION00520000000000000000">SeqRnd</A>
<LI><A NAME="tex2html341"
  HREF="node5.html#SECTION00530000000000000000">SeqNoRnd</A>
<LI><A NAME="tex2html342"
  HREF="node5.html#SECTION00540000000000000000">SeqSize</A>
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<H1><A NAME="SECTION00500000000000000000"></A>
<A NAME="sec-seqs"></A>
<BR>
Sequences
</H1> 

<P>
Patterns by themselves don't do much good. They have to be combined into
sequences to be of any use to you or to <I><B>MMA</B></I>.

<P>
A <I>Sequence</I> command sets the pattern(s) used in creating 
each track in your song:

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>Track Sequence Pattern1 Pattern2 ... </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>
``Track'' can be any valid track name: ``Chord'', ``Walk'', ``Walk-Sus'', ``Arpeggio-88'', etc.

<P>
All pattern names used when setting a sequence need to be defined
when this command is issued; or you can use what appears to be
a pattern definition right in the sequence command by enclosing the pattern definition in a set of  curly brackets ``{ }''.

<P>

<DIV ALIGN="CENTER">

<P><A NAME="eg:seq1"></A></P>      
	<TABLE CELLSPACING=0 CELLPADDING=10" BGCOLOR="#dddddd" BORDER=3><TR> <TD>
	
      	<TABLE  WIDTH="100%"><CAPTION ALIGN="BOTTOM"><STRONG><B>Example</B> 5.1:</STRONG>
Simple Sequence</CAPTION>
<TR><TD> 
      	    <BR>
<BR>
      	    
	
	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>SeqClear 
<BR>
SeqSize 2 
<BR>
Begin Drum 
<BR>	&nbsp;&nbsp;&nbsp; Sequence Snare4 
<BR>	&nbsp;&nbsp;&nbsp; Tone Snaredrum1 
<BR>
End 
<BR>
Begin Drum-1 
<BR>	&nbsp;&nbsp;&nbsp; Sequence Bass1 Bass2 
<BR>	&nbsp;&nbsp;&nbsp; Tone KickDrum2 
<BR>
End 
<BR>
Chord Sequence Broken8  
<BR>
Bass Sequence Broken8 
<BR>
Arpeggio Sequence { 1 1 100 * 8 } { 1 1 80 * 4 }  </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

      	    <BR>
<BR>
      	    </TD></TR>
</TABLE>

<P>
 

	</TD></TR></TABLE> 
 
</DIV>

<P>
Example <A HREF="#eg:seq1">5.1</A> creates a 2 bar pattern. The Drum, Chord and Bass patterns repeat on every bar; the Drum-1 sequence repeats after 2 bars. Note how the Arpeggio pattern is defined at run-time. <A NAME="tex2html29"
  HREF="#foot1727"><SUP>5.1</SUP></A>
<P>
If there are fewer patterns than <I>SeqSize</I>,  the sequence will be filled
out to correct size. If the number of patterns used is greater than <I>SeqSize</I> (see Chapter <A HREF="node17.html#sec-directives">17</A>) a warning message will be printed and the pattern list will be truncated.

<P>
When defining longer sequences, you can use the ``repeat'' symbol, a single ``/'', to save typing. For example, the following two lines are equivalent:

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>Bass Sequence Bass1 Bass1 Bass2 Bass2 
<BR>
Bass Sequence Bass1 / Bass2 /  </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>
<A NAME="sequence-clear"></A>
<P>
The special pattern name ``-'' (no quotes, just a single hyphen), or a single
``z'' can be used to turn a track off. For example, if we have set the
sequences in example <A HREF="#eg:seq1">5.1</A> and decide to delete the Bass halfway
though the song we could:

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>Bass Sequence -  </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>
The special sequences, ``-'' or``z'', are also the equivalent of a rest or
``tacet'' sequence. For example, in defining a 4 bar sequence with a 1-5 bass
pattern on the first 3 bars and a walking bass on bar 4 we might do something
like:

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>Bass Sequence Bass4-13 / / z 
<BR>
Walk Sequence z  / / Walk4-4  </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>
When a sequence is created a series of pointers to the existing patterns
are created. If you change the definition of a particular pattern
later in your file the new definition will have <I>no</I> effect
on your exisiting sequences.

<P>
Sequences are the workhorse of <I><B>MMA</B></I>. With them you can set up many interesting
patterns and variations. This chapter should certainly give more detail and
many more examples.

<P>
The following commands help manipulate sequences in your creations:

<P>

<H1><A NAME="SECTION00510000000000000000"></A>  <A NAME="sec-seqclear"></A>
<BR>
SeqClear
</H1>

<P>
This command clears all existing sequences from memory. It is useful
when defining a new sequence and you want to be sure that no ``leftover''
sequences are active. The command:

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>SeqClear </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>
deletes all sequence information.

<P>
Alternately, the command:

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>Drum SeqClear </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>
deletes <B>all</B> drum sequences. This includes the track ``Drum'', ``Drum1'', etc.

<P>
If you use a sub-track:

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>Chord-Piano SeqClear </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>
only the sequence for that track is cleared.<A NAME="tex2html30"
  HREF="#foot1782"><SUP>5.2</SUP></A>
<P>
In addition to clearing the sequence pattern, the following other settings are
restored to a default condition:

<P>

<UL>
<LI>Track Invert setting,
</LI>
<LI>Track Sequence Rnd setting,
</LI>
<LI>Track MidiSeq setting,
</LI>
<LI>Track octave,
</LI>
<LI>Track voice,
</LI>
<LI>Track Rvolume,
</LI>
<LI>Track Volume,
</LI>
<LI>Track RTime,
</LI>
<LI>Track Strum.
</LI>
</UL>

<P>
CAUTION: It is not possible to clear only <I>Drum</I>, <I>Chord</I>, etc. using  this command. Use the ``-'' option. 

<P>

<H1><A NAME="SECTION00520000000000000000">
SeqRnd</A>
</H1> 

<P>
Normally, the patterns used for each bar are selected in order. For example, if you had a sequence:

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>Drum-2 Sequence P1 P2 P3 z </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>
bar 1 would use ``P1'', bar 2 ``P2'', etc. However, if you set <I>SeqRnd</I> for a specific track, the pattern used <I>for that track</I> will be selected at random from the sequence list. Note that 'Z' bars <B>are</B> included in the selection. Due to the nature of random selection, it is quite possible to get a several bars with the same (or in the above case, no) pattern.

<P>
You can only use this command in a track or in a global context:

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>Drum SeqRnd </B></BLOCKQUOTE>

	</TD></TR></TABLE> 
or
	
	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>SeqRnd </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>
The latter example is interesting. Let us assume you have the following sequences defined (the contents of the patterns don't matter for the purpose of the example):

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>Chord C1 C2 C3 C4 
<BR>
Bass  B1 B2 B3 z 
<BR>
Walk  z / / W1  </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>
The idea of the <I>Bass</I> and <I>Walk</I> sequences is to play <I>either</I> one of the patterns, never both. If you were to randomize the tracks you might get a bar with no bass at all, one of the two, or none. However, if you set <I>SeqRnd</I> outside the tracks, then you will have one of the following patterns:

<P>
<BLOCKQUOTE>
<TABLE CELLPADDING=3>
<TR><TD ALIGN="LEFT">C1</TD>
<TD ALIGN="LEFT">B1</TD>
<TD ALIGN="LEFT">z</TD>
</TR>
<TR><TD ALIGN="LEFT">C2</TD>
<TD ALIGN="LEFT">B2</TD>
<TD ALIGN="LEFT">z</TD>
</TR>
<TR><TD ALIGN="LEFT">C3</TD>
<TD ALIGN="LEFT">B3</TD>
<TD ALIGN="LEFT">z</TD>
</TR>
<TR><TD ALIGN="LEFT">C4</TD>
<TD ALIGN="LEFT">z</TD>
<TD ALIGN="LEFT">W1</TD>
</TR>
</TABLE>
</BLOCKQUOTE>

<P>
A <I>SeqRnd</I> is cleared by a <I>SeqClear</I> or a <I>SeqNoRnd</I> directive.

<P>
If you have set <I>Invert</I> for a track, the inversions will follow the patterns. For example:

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>Chord Sequence C1 C2 C3 C4 
<BR>
Invert 0 1 2 3
		SeqRnd
	 </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>
Whenever pattern ``C1'' is selected it will be used with inversion 0, ``C2'' will always be inversion 1, etc.

<P>

<H1><A NAME="SECTION00530000000000000000">
SeqNoRnd</A>
</H1> 

<P>
This command sets the sequence order for the specified track to normal. It undoes the effect of the <I>SeqRnd</I> directive.  Example:

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>Drum-3 SeqNoRnd </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>

<H1><A NAME="SECTION00540000000000000000">
SeqSize</A>
</H1> 

<P>
The number of bars in a sequence are set with the ``SeqSize'' command. For example:

<P>

	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>SeqSize 4 </B></BLOCKQUOTE>

	</TD></TR></TABLE> 

<P>
sets it to 4 bars. The SeqSize applies to all tracks.

<P>
This command resets the <B>sequence counter</B> to 1.

<P>
If some sequences have already been defined, they will be truncated or expanded to the new size. Truncation is done by removing patterns from the end of the sequence; expansion is done by duplicating the sequence until it is long enough.

<P>
<BR><HR><H4>Footnotes</H4>
<DL>
<DT><A NAME="foot1727">... run-time.</A><A
 HREF="node5.html#tex2html29"><SUP>5.1</SUP></A></DT>
<DD>If you run <I><B>MMA</B></I> with the ``-s''  option you'll see pattern names in the format  ``_1''. The leading underscore indicates that the pattern was dynamically created in the sequence.

</DD>
<DT><A NAME="foot1782">...</A><A
 HREF="node5.html#tex2html30"><SUP>5.2</SUP></A></DT>
<DD>It is probably easier to use the command:
		
	<TABLE CELLSPACING=0 CELLPADDING=5" BGCOLOR="OldLace" BORDER=3><TR> <TD>
<BLOCKQUOTE><B>Chord-Piano Sequence - </B></BLOCKQUOTE>

	</TD></TR></TABLE> 
	if that is what you want to do. In this case <B>only</B> 
	sequence pattern is cleared. 

</DD>
</DL><HR>
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<ADDRESS>
Bob
2004-12-02
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