Across
Burst from trumpeter? One can’t go as high as Armstrong did (5,3)
See 21
Vessel for wine in tiny mouth? (6)
Tennis player for whom Covid jabs originally OK? That’s unlikely (8)
I haven't cracked this one yet — but Fifteensquared have:
Anagram of COVID J[abs] OK
Mouthpiece, glue’s stuck around one (9)
I haven't cracked this one yet — but Fifteensquared have:
I in GUM’S HELD
Prestidigitation, smoke and mirrors initially given reflection? (5)
I haven't cracked this one yet — but Fifteensquared have:
Reverse of CIG (cigarette, a smoke) A[nd] M[irrors]
Anything but a real swine cradling head of love bird (6)
I haven't cracked this one yet — but Fifteensquared have:
I can’t explain this, apart from the L as “head of love”
Sovereign a nation recalled (6)
I haven't cracked this one yet — but Fifteensquared have:
Reverse of A NIGER
Parting shot from spinning of S. Warne (6)
I haven't cracked this one yet — but Fifteensquared have:
(S WARNE)
Old documents reviewing pay in middle of April (6)
6a
Bouncer with velocity punching customer (5,6)
Syrian mother has a tantrum (9)
Hard bread out at sea (8)
3d
Gymnast: be lissome in twists (6,5)
Franco’s money put into plant (6)
Fuel like crude oil in engine not half backfiring! (8)
Down
Regular servings of bug food for a drone, probably? (3)
I haven't cracked this one yet — but Fifteensquared have:
Alternate letters of bUg FoOd. I’m not sure a UFO is “probably” a drone (or vice versa) – “possibly” might have been better
See 26 Across
Black-coloured stocking is lost (10)
I haven't cracked this one yet — but Fifteensquared have:
IS in (“stocked by”) JET-TONED
Teensy bit squiffy (6)
House of dance (4)
Shame about leader in fanzine penned by hack, say – filthy language (9)
I haven't cracked this one yet — but Fifteensquared have:
F[anzine] in ROAN (horse, a hack) in PITY
Enlightenment in rebranding of Labour Party post-David Miliband? (11)
Composed, as are rigid wings? (11)
Skeletal structure in Facebook address of Paul? (10)
Sinking ship proceeds to capsize, with rat running around (4,5)
I haven't cracked this one yet — but Fifteensquared have:
Reverse of ACTS (proceeds) in LOUSE
Black sheep spoiled food on farm? (3,3)
African carrier, first of containers, A, B or C? (5)
I haven't cracked this one yet — but Fifteensquared have:
C[ontainers] + A + MEL (Mel B or Mel C from the Spice Girls)
Fine wine? (4)
I haven't cracked this one yet — but Fifteensquared have:
From the French ÇA VA , meaning OK, fine
Celibate, with some frustration, understandably (3)
Type letters or click words in the clue