Song everyone gets in Michael Jackson album (6)
I believe the answer is:
ballad
'song' is the definition.
(I know that ballad is a type of song)
'everyone gets in michael jackson album' is the wordplay.
'everyone' becomes 'all' (all people).
'gets in' means one lot of letters goes inside another.
'michael jackson album' becomes 'bad' (I've seen this in another clue).
'all' placed into 'bad' is 'BALLAD'.
(Other definitions for ballad that I've seen before include "Love song" , "Narrative poem or song" , "Slow romantic song" , "A simple or old song" , "Poem telling a story" .)