Thanks to Maskarade. I don't go for jumbos since Araucaria retired, and don't care for M's despite their ingenuity, but have enjoyed his relatively infrequent 15x15s.
Agreed this was extremely gentle.
FOI 8, LOI 22, which remains half-parsed but solution seems clear.
COI clearly 7. Also liked 16 (though it's a bit familiar), 14 and 26.
Several musical solutions, but perhaps not enough for a theme.