There are four artists by the name "SMS." 1) Czech rock band from Liberec, http://www.indiesrec.eu/umelci/484/sms/
2) Spanish band teen group.
3) Samir Mujagić, a Bosnian singer-songwriter who releases records under the name SMS. His music can be characterized as Balkan ethno pop.
4) Ukrainian female pop group, http://sms-music.com.ua

Read more about SMS on Last.fm.