Akon had hoped to complete an album with Jackson once he finished his London concerts. The singer said they used to meet in Las Vegas whenever they had the time, and would talk on the phone constantly about ideas for the album.

Akon said they never actually completed a song except for "Hold My Hand," which leaked last year. "All the other songs were just ideas," Akon said.

He said he will keep the song fragments _ a chorus here, a verse there _ "locked up in the vault" until the Jackson family decides how to proceed. He said it could be worked into a tribute album.

"It was all positive records _ songs to uplift people, songs to make people think about the problems in life," Akon said. "It was all about bringing people together."