At least 6 bands/artists using the name Sai exist:

1. sai is a digicore rapper, singer and producer
2. SAI was an alternative rock band from Gothenburg, Sweden. The members disbanded in 2009 and subsequently reformed as Junction Skies following their record label deal with Dead Tree Music. During the band's short tenure, which started in 2007, they released several self-financed recordings along with one music video. Their earliest material was considerably heavier than the rock sound they later embraced, and received much praise in several alternative media outlets, such as France's Rock One Magazine. Before giving up the moniker of SAI, the members played a slew of successful shows in Belgium and contributed the song Avantgarde to the annual Gothenburg Allstar Collection, a popular compilation album series.

3. There is a rock band from Thailand called Sai.
4. Sai is also the name of an electro pop act from Japan which released the EP "Living".
5. Sai (Yasen Penchev) is an industrial dance music artist from Sofia, Bulgaria.
6. Sai (Yohei Sai) is a Deep House DJ and Producer from Tokyo.
7. SAI is a female Japaness rapper from Tokyo who is also singing in English in the all female Japanese industrial/goth/punk band Ms.Machine
8. sai is an electronic, jersey club, dnb, and EDM producer Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.