- For some reason the notes wont stop, you have to do it manually by pressing SPACE on the Amiga, respectively add the command to your track.
It depends on the default note length for the instrument. Usually, it's zero, which means play until a stop message is sent.
You can change the default note length (in ticks) for an instrument by setting the Hold value in the instrument properties window. This works for samples and MIDI instruments. The decay value works for samples only.
If you do set a default note and need it to play longer in a sequence, you need to extend the note manually in the channel by using the enter key to sustain the current note. For example, if you were using 4 lines per beat and 6 ticks per line and had set the instrument hold to 6, the following pattern would play for 1/4 beat on each beat:
C-3 100000
--- 000000
--- 000000
--- 000000
C-3 100000
--- 000000
--- 000000
--- 000000
C-3 100000
--- 000000
--- 000000
--- 000000
C-3 100000
--- 000000
--- 000000
--- 000000
If you wanted the notes to play longer, say half a beat, you'd extend them (using the enter key in edit mode, and your track would look like this:
C-3 100000
-|- 100000
--- 000000
--- 000000
C-3 100000
-|- 100000
--- 000000
--- 000000
C-3 100000
-|- 100000
--- 000000
--- 000000
C-3 100000
-|- 100000
--- 000000
--- 000000
You can control the note length to less than one line by using the player command 08xx, which sets the length and repeat rate (see manual for more info). This is good for creating very chopped up sounding stuff with very short timing.