Sample or cover ? (George McCrae vs Blondie)

Rock Your Baby - George McCrae (1974)

http://www.discogs.com/George-McCrae-Rock-Your-Baby/master/122875

Heart of Glass - Blondie (1978) (chorus)

Owww never spotted that resemblance! But once you pay attention.... obvious.

How many times have you/we/ someone said about a song, that sounds like... OR, a song starts up on the radio and you say, that's .... and it turns out to be some other song, with the same start up notes, chords, riffs, etc. Most recent: Robin Thicke's current big hit number vs. Marvin Gaye's song.

Here are two website items that I've recently run into on this very topic. Some we know of, other not.

http://entertainment.time.com/2013/08/22/11-suspiciously-sound-alike-songs/#slid…/all/?&_suid=137913469029609525737608584173

http://www.songfacts.com/blog/writing/a_history_of_plagiarism_in_songs