A Child of the 70's

We listen to a lot of music. So far, Eileen loves all musicals (though I heavily edit them, as I don't need a 5 year old singing 'I'm Just a Girl Who Can't Say No'). We sing folk and rock and country. She likes Dolly Parton and Johnny Cash, Arlo Guthrie, Woody Guthrie, Pete Seeger, Kingston Trio, Tom Lehrer (within reason....yes to 'Poisoning Pigeons' no to 'Masochism Tango'), but in the past three days I have heard her singing Peter, Paul and Mary; Harry Chapin; and Cat Stevens. Goodness. I need to listen to something current that has lyrics that I won't need to wash her mouth with soap if she sings...suggestions?