There are at least two artists using this name:

1) kolme (formerly known as callme) is a Japanese pop idol trio under the label avex trax. The members are former members of Dorothy Little Happy.

Members:
Akimoto Ruuna (秋元瑠海)
Tominaga Mimori (富永美杜)
Hayasaka Koumi (早坂香美)

2) Kolme is a Portuguese jazz band. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.