Across
Graduate, Master of Music, taking position after retirement (8)
Well-known where yours truly pointed (6)
See 24 down
Buzzing about only bees do — only them! (6,4)
Improvise, serving some chicken with vermouth (4,2)
Delicacy brought first of tummy upsets (8)
I haven't cracked this one yet — but Fifteensquared have:
T[ummy] RUFFLES (upsets)
Rare kiss for hillbilly (7)
A sharp funny line in a few words (7)
Timeworn stratagem in English county not entirely backed (8)
I haven't cracked this one yet — but Fifteensquared have:
RUSE (stratagem) in a reversal (backed) of DEVO[n] (English county, not entirely)
Supervisor in military office? (6)
Opt for crucible? (7,3)
I haven't cracked this one yet — but Fifteensquared have:
A reverse anagram (melting) of POT
Top evidence initially disregarded (4)
Oxygenated 3 in de-oxygenated channels? (6)
Start with boy admitting bad speller? (6,2)
Down
A point south of friend on a hill (8)
I haven't cracked this one yet — but Fifteensquared have:
A TINE (a point) after PAL (friend) – one of the seven hills of Rome
18d
NASA's possible question to lost space probe — seriously? (4,6,3,3,2)
See 2
Paean, book for all to see in stock (7)
I haven't cracked this one yet — but Fifteensquared have:
B (book) + U (for all to see – film classification) in TRITE (stock)
13d
It produces sustainable power with immigration of race for these scandalously treated people (8,10)
Intellect welcoming valentine's lips, just romance (4,6)
I haven't cracked this one yet — but Fifteensquared have:
LOAF (intellect – Cockney rhyming slang: loaf of bread = head) round v[alentin]E + FAIR (just)
See 19
See 5
Confidentially intimate feeling in functions with Boris, ultimately (8)
See 2
7d
Fat deposit a tricky matter (7,6)
Mae West's sheepish part in film is seen (6)
I haven't cracked this one yet — but Fifteensquared have:
[ma]E WE[st] (sheepish part) in VID (film)
Cool joker beaten (4,2)
10a
Make last possible contents of cellar? (4,4)
Type letters or click words in the clue