A friend told me about a group called Apologetix, and suggested that I sometimes use some of their music in Sunday School lessons.
It turned out to be a massive hit! And nowadays with Spotify, Youtube etc. it is really easy to find these songs and print of the lyrics. We had a lot of fun learning "Do what David did but Saul didn't do" which is a parody to the tune of "Do Wah Diddy Diddy".
As we are doing David, I focussed mainly on sourcing David songs (see a list below), but they have hundreds of amazing and fun songs, so all in all a great resource to occasionally dip into.
David songs:
Do what David did (Parody of "Do Wah Diddy Diddy"). https://www.youtube.com/watch?v=gy4ckoSzQ2E
That's Saul (Parody of "That's All"). https://www.youtube.com/watch?v=ooeRUKq8idI
Crazy Little Kind God Loves (Parody of "Crazy little thing called Love"0 https://www.youtube.com/watch?v=g4XI35tUXgg
Bethlehemian Rhapsody (song about David and Goliath to the tune of "Bohemian Rhapsody"). https://www.youtube.com/watch?v=eK4DAbfnHzM
Be like David Was (Parody of "Feel Like makin' love"). https://www.youtube.com/watch?v=nRUgu3epAWc