In my wiki-browsing I was led to the page on Rolling Stone’s 500 Greatest Songs of All Time and saw this fun tidbit:

Love is the most frequent word used in the songs’ lyrics, with 1057 occurrences, followed by I’m (1000 uses), oh (847 uses), know (779 uses), baby (746 uses), got (702 uses), and yeah (656 uses).

Yep, that pretty much sums up rock and roll.