This crossword No. 28660 clues and answers were published on Fri 21 Jan 2022 and the puzzle can be visited by following The Guardian Cryptic Crossword No. 28660 link.
All Across Clues and Answers:
9-across – Band, very quiet otherwise, introducing piece of music at appropriate time : OPPORTUNE
10-across – Rustic piper holding one old instrument : PIANO
11-across – Musical sounds — new, in place of fine lady’s bells : TONES
12-across – Group of musicians runs into singer not allowed in audition : BRASSBAND
13-across – Female composer desires to replace end of stringed instrument : LUTYENS
14-across – Stomach the first piece of music I had to play repeatedly : MIDRIFF
17-across – Tore to pieces another composition of Verdi : RIVED
19-across – Chopin, Vivaldi and Scarlatti initially in vogue : FAD
20-across – Musical theme in mass sacred work provided : MOTIF
21-across – Instrument back in that selection : CELESTA
22-across – Heavy volume, or medium, in parts of Busoni switched : OMNIBUS
24-across – Trial cast upset opera producer : SCARLATTI
26-across – Recruit two players from quartet — drum noise heard : ENROL
28-across – Like couple in song, endlessly? Strong point : FORTE
29-across – Trumpets opinions, well-argued, very, very loudly : SOUNDSOFF
All Down Clues and Answers:
1-down – Rowdy — with 27 in gradual change from 8 to 24 down : LOUT
2-down – Instrument made of wood splitting stone : SPINET
3-down – Changes in volume, namely before coda in revised score : CRESCENDOS
4-down – Odd note, as in some Cuban music : RUMBAS
5-down – Last parts of national anthem in various keys, without winds : BECALMED
6-down – Piece of music available in bookshop, usually : OPUS
7-down – So predecessor briefly thanks said composer who accepts a lot? : FATALIST
8-down – Showy piece of music learner turned up : LOUD
13-down – Line I cry out as part of song : LYRIC
15-down – Stupid suggestion, apart from one name, from 28 to 10 : DIMINUENDO
16-down – Wind instruments like pipes, but higher in volume : FIFES
18-down – French author exploded to Ravel about one : VOLTAIRE
19-down – Loud string player shielding a wind player : FLAUTIST
22-down – Noisome and discordant duo is holding no score : ODIOUS
23-down – Time spanned by piece of music fine for composer : BARTOK
24-down – 10 like this, on paper : SOFT
25-down – Told a story in song : LIED
27-down – Space for church organ frequently left above : LOFT
This crossword has in total 33 where 15 are across and 18 are down.