"Mystical bass vibrating like a beeper," this fringe rapper-producer out of Florida whispers on the first single from his upcoming debut, Chronicles of SpaceGhostPurrp. It could be his mission statement. A spaced-out thumper blending Nineties-era Oakland flows with Southern bounce, "No Evidence" has a stonefaced, intoxicating ambiance. Trippy, man.

Listen To SpaceGhostPurrp's "No Evidence": 

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• Photos: Random Notes

“Help Me”

Joni Mitchell wrote and recorded this song for her album Court and Spark, but she had to switch from her regular band to make the song sound exactly the way she wanted. "I had attempted to play my music with rock & roll players," she told Rolling Stone. "They’d laugh, 'Awww, isn't that cute? She's trying to teach us how to play.'" Mitchell switched to a jazz band, Tom Scott’s L.A. Express, and scored the biggest hit of her career in the process.