Sound from Lana with trio playing (8)
I believe the answer is:
rational
'sound' is the definition.
(I've seen this before)
'lana with trio playing' is the wordplay.
'with' says to put letters next to each other.
'playing' indicates anagramming the letters.
'lana' after 'trio' is 'triolana'.
'triolana' with letters rearranged gives 'RATIONAL'.
'from' acts as a link.
(Other definitions for rational that I've seen before include "Having common sense or reason" , "Based on reason or logic" , "17 [INTELLIGENT]" , "Endowed with reason" , "Reasonable, logical" .)