There are more than one artist with this name:

1. Dublin-based Irish singer: Sadhbh O'Sullivan writes songs, sings them and records them using a bunch of random instruments. She then finds some other musicians to help her to turn her songs into a nice big noise. The current group of noisemakers is: Eoin Hartwieg - bass, Patrick Hopkins - drums, Mark Dudley - guitar
http://www.sivemusic.com/

2. Swedish group: http://www.youtube.com/watch?v=SZeeAgm3a3g

3. Spanish melodic group rock formed in 2007 (in this case, the name of the group is SiVE, although last.fm doesn't differentiate between upper and lowcase): http://www.gruposive.com


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