Singing songs is a great way to improve your pronunciation. Why don't you try the karaoke on this webpage? I chose the song Mamma mia to start with, but there is a very wide range of songs available.
If you go down a little you will see the video of the song and the complete lyrics, so you can read them in advance before you try the karaoke.
I'm afraid this song has been removed from that webpage. But there are lots of them you can still enjoy. Give it a try!!