The bass part needs to fit the drum part, of course. Israel Crosby gives the right syncopated flavor. The key of D suits the bass, for then the first note of the groove is an open A string. How many tracks before \u201CPoinciana\u201D began with a funky bass line? No harmony above the vamp, but just the bass and drums grooving along? There can't be many, and almost certainly none for piano trio.