Louie Iturzaeta has emailed me and asked me to host his awesome new Musical App for the PSP, heres the info
PSP Rhythm Composer is a TR-x0x style drum machine. It features a easy to use
16 step sequencer, 16 drump pattern loops and 16 drum sounds.
-=How to use the drum sequencer=-
There are 16 buttons on the bottom of the screen. Each one represents a step
in a measure. There is a red line above the step currently selected. When you
press the X button the step will light up orange for regular sound, then red
for accented sound and green for flam (hits accented drum twice).
There is a bar above the buttons, the note represents each beat and whole
gray bar shows you which buttons (steps) are in that beat.
To change the drum sounds press up or down on the D-Pad. The currently
selected drum will display on the screen. The buttons on the bottom of the
screen will also light up and show you the programming of the drum hits.
I can tell you it works fine on v1.0 PSP as well as v1.5