Just a light-hearted thought: if you were limited to playing compositions by people whose names begin with "?", what letter would you choose? (And what is your instrument...?)
For recorder, I'm currently very tempted by "B". It obviously provides Bach, but also Boismortier for all that French stuff, and Barsanti (who comes with a Bonus of Scots tunes). Following closely in their heels, we get Babell and the Benda family, and Bigaglia. And I've still got Blavet in the Background. I'm sure other letters have lots to offer, too, and I'm wondering if different instruments have radically different letters.