Stuck in bottom right corner.
54a it went with the need to recompose at the end of a score (9) T?A?T?E??
57a One who travels up Amazon, say, but velocity's small (5) R?S??
47d And expensive in Paris for one who's eating out (6) ?T????
Hi Malone, I keep getting distracted by this week's Listener - it's so rare that I can do one that I can't stop myself from constantly going back to it! That said, I've still only solved about half of the clues, but I've figured out the theme so will soldier on.