There are two songs for dancing the Cha Cha on this album.
Tracks 18 “Tears Dry on Their Own“; Lisa Snowden & Brendan Cole danced the Cha Cha to this in Series 6
The original song was by Amy Winehouse
Track 19 “Crazy In Love” is a slower Cha Cha at @25bpm, making it a good track for beginners. Alesha Dixon & Matthew Cuttler danced to this in Series 5
The original song was by Beyoncé featt Jay-Z.
Joey McIntyre & Ashly DelGrosso danced to this on Dancing With The Stars Season 1