I've noticed that when I google the words to a song, that the credit for the song is given to someone who may have performed the song rather than the composer. Some examples:
Mr. Bojangles by Sammy Davis Jr. - no mention of Jerry Jeff Walker
The Christmas Song by Nat King Cole - no mention of Mel Torme & Bob Wells
The Remember Song by Tom Rush - no mention of Steven Walters
First Time Ever I Saw Your Face by -no mention of Ewan McColl

Youtube is just as bad.
A cover of First Time Ever I Saw Your Face by Celine Dion - once again no mention of Ewan McColl

It wouldn't bother me quite as much if it said,"Mr. Bojangles as sung by Sammy Davis Jr." Even so, Jerry Jeff's name should be mentioned.

How about,"Here's my cover of Celine Dion's version of First Time Ever I Saw Your Face by Ewan McColl"?