Musician right into tango is lively (8)
I believe the answer is:
organist
'musician' is the definition.
(organist is a kind of musician)
'right into tango is lively' is the wordplay.
I cannot really understand how this works, but
'right' could be 'r' (common abbreviation) and 'r' is located in the answer.
'tango' could be 't' (phonetic alphabet: alpha, bravo, charlie etc.) and 't' is located in the answer.
'is' is within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for organist that I've seen before include "Accompanist, keyboard player" , "One plays in church usually" , "Church instr. player" , "Roasting (anag)" , "Cathedral musician" .)