Please help with final clues.
12a. That woman's doubled in energy after start of clamorous ovation.(6) I have ?H?E?S
28a. Note associated with vibration -note in e.g. vibrating pipe ultimately.(9)
I have E?G?N?O?E
15d. Place to look for backing to bring in new organ features.(4,5) I have K?E? S?O?S