It’s Phi-day again!
Phi has let us off lightly today – we found this rather easier than we have come to expect from our regular Friday setter.
We had to check the definition at 21ac – a new sort of harmonica for us! Everything else fell into place fairly quickly, and then we spent some time looking for a theme – to no avail! Any thoughts out there?

FLIGHT (escape) round (‘in which’) I (one) R (runs) ST (street)
O (nothing) in VID (video)
An anagram (‘besotted’) of MAC SWOONS round T (first letter or ‘bit’ of tottie)
A reversal of I (one) UTE (Aussie truck)
EVE (‘first example of mother’) round or ‘catching’ A D (daughter)
IN (popular) SIDE (group) OUT (not selected)
CAR (vehicle) L (left) in SET (position)
S (small) ICE (reserve) round or ‘receiving’ first three letters or 75% of LENd (grant)
NIGH (nearly) TIE (bondage item)
FREES (delivers) I (one) A
H (hot) + an anagram (‘cooked’) of MACARONI
A reversal (‘reflected’) of AN ERA (a good many years)
Hidden (‘only some’) and reversed (‘rejected’) in nOT EVeryone
An anagram (‘treated’) of CUT FINGER + E (first letter or ‘minimum’ of effort)
M (millions) in CAP (better)
WELL IN (very popular) G (government) TON (people of fashion)
FOSTERS (promotes) ON (practicable)
R I O (first or ‘initial’ letters of red is odd) JA (‘certainly’ – ‘yes’ in German, as a Riesling grower might be)
An anagram (‘disrupted’) of ON SATELLITES
I (one) + a reversal (‘rising’) of SIN (crime) in ROT (corruption)
HEAR (pick up) S E S (last or ‘ultimate’ letters of trucks are lorries)
OUTGOING (extravert) S (special)
DR (doctor) IF (provided) T (last or ‘end’ letter of patient)
A clue-as-definition: E (drug) in ADULT (grown-up) RATION (serving)
An anagram (‘confusing’) of TO A GIRL + HM (His Majesty – the King)
A reversal (‘rising’) of NILE (river) round or ‘restricting’ A LAME (feeble)
EPIC (‘big film’) + N (new) in E E (middle letters of week)
FRACAs (uproar) missing the last letter (‘a lot of’) round T (first letter or ‘source’ of this) + L (line)
H (hard) AVOCado (green fruit) without ‘ado’ (trouble)
A reversal (‘up’) of PURE (clean) + T (time)
Funny, 3d had me musing What are those funky self-similar images called, and then there they were at 20d. Agree, BandJ, a pleasant stroll, thanks all.
And a flower that’s actually a plant!
I needed to come here for the HARMONICA, even initial googling shed no light.
Thank you Phi and B&J
The glass HARMONICA was new to me as well. I had Darlington for WELLINGTON until I realized it had an extra “g”. The city made me wonder about the eponymous burger contest, but there didn’t seem to be many obvious candidates and ADULTERATION would definitely be eschewed.