Not necessarily happy music, just music that makes your mood better/your commute more bearable.

I've been listening to all of Chic's albums (apart from Chic-ism). They're great, even the lesser known ones. Some are better than others (the first 3) but you can't really go wrong with any of them generally.

Also been checking out some Ian Dury. Couldn't be bothered originally because I didn't like the sound of 'pub rock' but his music is actually more a mix of new wave, funk and reggae. Do It Yourself is a good album which has all those things. Might give Laughter a listen later tonight.