4: Put another way, perhaps, clarinet overwhelming harps, somehow (9)
9: Desire tale filled with energy (5)
10: Two characters together, drunk, hit PhD on the third of August (9)
11: Ornamentation used in the a la mode coronet (5)
12: Conforming to good taste, I cast thee out (9)
14: Finish suddenly, like an oboe? (1, 4, 2, 3, 3)
17: 3-down said Sir, I have these! (5,4,4)
20: Taste of beer and liquor with game (3-6)
23: Digs for leads in homicide of the elderly lady (5)
25: Washed-up press agent, having dropped client's butt, is not the one in the driver's seat (9)
26: 'Another execrable score,' Jack Nicklaus finally fumes (5)
27: See, sir; bar is operating at the beer eatery (9)
28: Start reorganizing notes (5)