So here are musicians/bands beginning with "B"
Bachman-Turner Overdrive
Julianne Baird
The Baltimore Consort
Baltimore Symphony Orchestra
The Bangles
BBC Philharmonic Orchestra
Beady Belle
The Beatles
Harry Belafonte
Pat Benatar
Berliner Philharmonker
Black Lodge Singers
Blondie
Eric Bogle
Boney M
The Boston Camerata
The Bothy Band
Bryan Bowers
David Bowie
Greg Brown
Ruth Brown
Jackson Browne