A song murdered by someone.

RE: You aint seen nothing yet:

I guess Burton Cummings felt like he had a connection to that song since former band member Randy Bachman sang it for BTO. How could anyone other than Randy Bachman even attempt that song. Maybe Mel Tillis.

I Did it My Way by Sid Vicious. Well, actually it wasn’t too bad.

I may be the only person alive that likes Lou Reed singing "This Magic Moment" from a tribute to Doc Pomus.

Quite recently two members of Metallica murdered Prices’ “When Doves Cry” 
please look it up. Hard to believe they thought it was a good idea... But evidently they cover a song by a local artist for every town they are in. So maybe it was a joke. Cringe worthy.

Sometimes "murdering" a song can be as much about changing it as it is about doing a really bad rendition. In the case of Cohens Hallelujah, you may have seen the video of the little school girl in Ireland (?) who redid it as a Christian song. It went virile. The backlash was the fear that the latest version might eclipse the original. Other times an artist can breath life into a song that was badly needed. Arlo Guthrie put Steve Goodman on the map with the remake of "City of New Orleans". Steve Goodman was grateful for that.