Musicians Macy Gray (search), Lenny Kravitz (search) and Avril Lavigne (search) are among the voices welcoming the Olympics back to Athens in three albums recorded to honor the Games, record label EMI Greece announced Monday.

The albums, titled "Phos," "Unity" and "Harmony," were recorded for the Aug. 13-29 Games.

"Phos," which means light in Greek, features songs by Greek composer Mikis Theodorakis (search) sung by local musicians. "Unity" is made up of international stars. "Harmony" has classical songs.

"I was excited to be a part of the 'Unity' album, especially right now with the hard times we are having in the U.S. and around the world with the (Iraq) war," Gray said. "I think the Olympic Games is a great opportunity to bring a lot of people together for a positive reason."

Gray sings a duet with Keziah Jones called "Oh Yeah."

"It's mainly about personal success, about feeling good within yourself," Gray said.