Gyrated drunkenly to Bee Gees tune (7)
I believe the answer is:
tragedy
'bee gees tune' is the definition.
(song by the Bee Gees)
'gyrated drunkenly' is the wordplay.
'drunkenly' indicates anagramming the letters.
'gyrated' with letters rearranged gives 'TRAGEDY'.
'to' is the link.
(Other definitions for tragedy that I've seen before include "Dire misfortune" , "Play ending unhappily" , "Play with a gloomy finish" , "Disaster - drama" , "Huge blow" .)