There are three artists called Lemma.

1) A Finnish indie pop band. "2006: Spread the Word demo and 2008: Standing on our toes demo. The future plans are, like always, having fun and sounding nice. Maybe some gigs. Maybe more recordings! That it is all about, right?"
http://www.myspace.com/lemmalemma

2) Lemma (렘마) is a South-Korean rapper.

3) lemma, noun, plural lemmas or lemmata

1. A subsidiary proposition assumed to be valid and used to demonstrate a principal proposition. 2. A theme, argument, or subject indicated in a title. 3. High energy musical group based in the fly-over region of Oklahoma.

"Imagine The Beatles and Sublime with a splash of the blues - now you've got an idea of the spectacular music produced by this five-piece, high-energy band from Oklahoma City" - Chris Colberg with newsok.com Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.