The variously titled Monk tune is probably one of the most covered standards in jazz. We all have our favourites. (Contains YouTube clips). Obviously the man himself deserves first mention: Wonderful, uncompromising, jagged and unconventional. Monk, although aligned with bebop, really comes from the stride tradition; he has more in common with Ellington, despite his advanced harmony. His compositions are deeply logical, even where they take unexpected turns. The most famous cover is probably Miles' version on the album that dropped the "About" from the title. But that's never been satisfactory for me. It isn't (in my view) Miles at his best, and it isn't my favourite reading of the tune. But it does have Red Garland, Paul Chambers and Trane, so here it is: My favourite is the under-rated and under-stated Grant Green, who re-instates the "About" in the title. Green had a deep understanding of harmony, but, steeped in the blues, had the taste to apply an economy of notes where a lesser talent might have been tempted to show off with a welter of flurries. The most starling is the one with Bobby McFerrin doing the vocal with Herbie Hancock's band for the film soundtrack. All the more remarkable when you realise the sound was all him, without the aid of computer treatment.