Beginning with covers of Nirvana track (7)
I believe the answer is:
nascent
'beginning' is the definition.
(something nascent is just beginning or starting)
'with covers of nirvana track' is the wordplay.
'with' means one lot of letters go next to another.
'covers of' says to hollow out the word (remove centre letters).
'track' becomes 'scent' (both can mean a trace left by someone).
'nirvana' with its middle removed is 'na'.
'na' next to 'scent' is 'NASCENT'.
(Other definitions for nascent that I've seen before include "being coined" , "Dawning" , "Promising potential" , "Budding early" , "Starting to grow" .)