One sign of a great classic rock artist is other musicians covering their originals. Tom Petty's music has been recreated by so many musicians from a wide variety of genres. His songs have been covered by Johnny Cash, Def Leppard, and Poison, just to name a few. Even Miley Cyrus and Taylor Swift have covered his songs. Check out Stevie Nick's version of "Free Fallin." Rest in Peace, Tom Petty! You are sorely missed.
Stevie Nicks, known as the singer of Fleetwood Mac, did this beautiful cover of Tom Petty's song for her 3-CD-box set "Enchanted", which includes various songs from 1973 to 1997. Love it.