Sequencer microprocessors

[Budweiser [FTS]]

I am really interested in the idea of a cloning the 909 drum machine,
now that i have enough information about the circuits (especially the
the sample playback circuits for the hihats/cymbals).

What sort of processor would be best for such a design? Keeping in
mind I want to add more recent features found on modern instruments
like realtime midi control of the sounds, and leaving the sequencer
running while changing from play to write mode (like the 606).....

I haven't done much on uP's, apat from a PLC and one of the simple
motorola devices....

<bUd>