Years ago, when I still thought Contemporary Christian music wasn't garbage, we did a version of Amazing Grace to the tune of Peaceful, Easy Feeling. We used the verses of Amazing Grace, but wrote a new chorus:
Now I've got a peaceful, easy feeling
I know You won't let me down
Now that You've set me on solid ground
and a new bridge:
Oh Lord, you search my heart and know me
You are the lover of my soul
By Your blood You have redeemed me
By Your stripes I am made whole
If I may say so, we did a great job. But looking back, it seems kind of cheesy.
I'd still like to try Amazing Grace to the tune of Stranglehold.