Thanks for the board welcome. A wide range of straight, trad, bop, and free (no smoothies!). I'm not familiar with John Butcher or Barney Wilen. I suspect they're two musicians separated by a common instrument
Wilen does play, alongside Miles, on an old French soundtrack recording I have (had?-- can't find it), Ascenseur pour l'echafaud. Haven't listened to that in a while because-- if I recall, it was kind of 'snippety', small ambiguous bits of music for the film. Maybe I'm wrong and need to check it out again.