Felicity & Vincent [Cha-Cha] Sunny - Poor. Too fast and no percussion to mark out the Cha-Cha beats.
Scott & Natalie [Slow Waltz] I Never Loved A Man - Good. Correct tempo and clear beats.
Goldie & Kristina [Cha-Cha] Tik Tok - Good. Not my favourite, but strict tempo and strong beats.
Patsy & Robin [Slow Waltz] When I Need Love - OK, but slightly too fast.
Matt & Aliona [Cha-Cha] Ain't No Mountain High Enough -OK - bit cheesy and X-factory. Has this been used before?
Pamela & James [Slow Waltz] If I Ain't Got You - Obvious choice. Slightly too fast.
Paul & Ola [Cha-Cha] Could It Be Magic - This is fine - slow enough & clear enough.
Jimi & Flavia [Cha-Cha] Don't Upset the Rhythm - Not good. Usual BBC shoe-horning a modern song into a dance. Too fast, and just doesn't have the nice staccato feel the Cha-Cha needs.
Peter & Erin [Slow Waltz] Take It To The Limit - Used before. Meh
Michelle & Brendan [Cha-Cha] Stone Cold Sober - Worst Cha-Cha song in the selection. Too much change in percussion and no Cha-Cha beat. This song probably impeded Michelle's dancing.
Gavin & Katya [Slow Waltz] You Light Up My Life - Nice strict tempo song, but has it been used before??
Tina & Jared [Cha-Cha] California Gurls - OK. I've heard this used in dance classes, and it has the right tempo, but it's a bit too electronic to really kick-ass as a Cha-Cha.
Ann & Anton [Slow Waltz] My Cherie - Nice old-fashioned song. Like it.
Kara & Artem [Cha-Cha] I Like It - Horrible, synthy, too fast, no clear percussion.
So in general the Waltzes were pretty good, the Cha-Chas pretty bad. Disappointing that there were no 'Latin' music-style Cha-Chas (or, we can only wish, a Spanish language Cha-Cha).