15 Acr. A student of swinging Britain, perhaps (12) is is Musicologist.... "L" & "T" are only letters so far ! 22 Acr . Student's ill-gotten gain? ???r???t 24 acr - It's right for living now - one swears on it ? starts with "A" (i think) sorry not much to go on - it gets tougher !
sorry - 24 acr is 8 letters - I'm basing the "A" as 1st letter from the clue "Stick to crack" which I assume is "Cleave" The two answers are excellent - thanks.