The bass clef, for anyone forced to play piano as a child, is the symbol used to annotate the left hand instructions on sheet music (usually for ‘The Entertainer’ or ‘Green Sleeves’). Bass, how low can you go? Very low is the answer where Bass Clef is concerned. The Clapton-bassed (sic), experimental, dubstep artist has been filling dancefloors and garnering rave reviews, with Time Out calling him the ‘Hackney dub master.’