This drumming is rubbish, as well (6)
I believe the answer is:
tattoo
'this drumming' is the definition.
(thesaurus)
'rubbish as well' is the wordplay.
'rubbish' becomes 'tat' (I've seen this before).
'as well' becomes 'too' ('too' can be a synonym of 'as well').
'tat'+'too'='TATTOO'
'is' is the link.
(Other definitions for tattoo that I've seen before include "Drum signal, display" , "Display in Edinburgh" , "Military call and design on the skin" , "image on one's skin" , "Pageant; drum beat" .)