Not every song can be completely original, but there are some that get a little bit too close to others for comfort. The good people at ask reddit had people share the songs that they though sounded just a little bit too similar. Some of these we've hear before and some we'll never listen to the same way again. Here are :
1. gh0stingRS Just Mad Us Think About Being Trapped In That Damn Cave:
the Pokemon Cave theme and Clocks by Coldplay
2. ami2weird4u Probably Forgot What Happened To Elsa's Papa
"Papa can you hear me" and "Do You Wanna Build a Snowman"
Papa Can You Hear Me?:
3. WinkingAndArtifice points out that the greatest band of all time, The Beatles, were essentially covered by the second greatest band of all time, The Offspring:
Ob la di by the Beatles and Get a Job by the Offspring