what's the name of the function of 3K where you can change the drum pattern(eg-rock to tango etc)while playing back a SMF(the song will be sychonized with internal drum style patterns).Is that function avalible for PSR 2000?

there is no seperate function...Just play the smf.....then pick a style and push start the kb drums will match the smf song.

can psr 2000 do that?