Top Ten Most Feel-Good ABBA Songs

Abba have made some of the most feel-good songs in pop. I've chosen my personal favourites but I know there are more. Which is your favourite? Which one makes you smile and want to dance like one's watching? Feel free to add your own or vote for an existing favourite :)
The Top Ten
1 Waterloo
2 Mamma Mia
3 Lay All Your Love on Me
4 Take a Chance on Me
5 Thank You for the Music
6 I Do, I Do, I Do, I Do, I Do
7 Dancing Queen
8 Voulez Vous
9 Does Your Mother Know
10 Gimme! Gimme! Gimme! (A Man After Midnight)
The Contenders
11 S.O.S
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