Sherlock is the name of more than one artist.
1) a group consisting of Derek Porter, John Scott, Ted Rundquist and Chad Molloy
2) a former swedish hiphop group with Thomas Rusiak, PeeWee, Speednock and producer Sebrock.
It may also be an incorrect artist tag for a soundtrack if so do Last.fm and yourself a favour. Fix your tags by putting the actual artist name in the artist field. The easiest way is to use MusicBrainz Picard.