There is more than one artist with this name:
1) Sweeper is a Serbian pop punk band
2) Sweeper is Czech indie/pop band.
1) Sweeper is a Serbian pop punk band.As it usually is, two guys from a small town decided to put their thoughts in the air (actually all they wanted was to have guitars around their necks). So, pushed by their favorite bands and playing skills, they wrote a few songs and found comrades with similar likes to jam along. First, they called themselves Titty Twister?! and had a few shows in their home town. Read more on Last.fm