speed: 70 bpm the dj’s take: Song #2 in episode #68 of our mix show (2:15): So I issued the challenge to mashup Whatcha Say with Fashion Killa awhile ago , and when no one answers the call, you have to take matters into your own hands. My final verdict: it was ok. The beats are definitely compatible with the robotic female voices, although it took some adjusting to keep them from overwhelming each other during the transition. I think the potential for a good mashup is still there. But you may want to put in a little more work than I did. Some other key-compatible music: Don't Go - Skrillex, Justin Bieber, Don Toliver [75 bpm] Up and Down - Doja Cat [75 bpm] STUNNAMAN - Birdman, Roddy Ricch, Lil Wayne [72-73 bpm] By Your Side - Sade [73 bpm] In For The Kill - La Roux Believer - Major Lazer, Showtek Everyday - A$AP Rocky, Rod Stewart, Miguel, Mark Ronson She Knows - Ne-Yo, Juicy J Whatcha Say - Jason Derulo Ridin' - Chamillionaire, Krayzie Bone