Brendan's nudge on 13d led me to finish the west side except 1d (hint, please?), so I now just need 27a and 28d. If my 24d is right (it fits the first word as defn, but I haven't a clue abiut the wordplay), then 27a with crossers at 1,3, 7 and 9 is not in the Crossword Solver's vocabulary. And I can make nothing of 28d.
Feeling tired today after a lot of singing yesterday, with an afternoon rehearsal before an evening concert of Vivaldi, Mozart, Mendelssohn.