Covers
Original songs recorded by other artists, but performed by a different artist.
In the case of Evanescence, here is a list of covers that they have performed:
A Perfect Circle - Orestes
AC/DC - Highway To Hell (snippet only)
Alice in Chains - Down In A Hole (snippet only)
Blue Oyster Cult - Don't Fear the Reaper
Garbage - Only Happy When it Rains
Korn - Blind (snippet only)
Korn - Thoughtless
Live - The Dolphin's Cry
Marilyn Manson - The Beautiful People (snippet only)
Metallica - Enter Sandman (snippet only)
Metallica - One (snippet only)
The Offspring - Self Esteem
Queen - Another One Bites The Dust (snippet only)
Slayer - Raining Blood (snippet only)
Smashing Pumpkins - Zero
Soul Embraced - My Tourniquet (yes, it counts)
Soundgarden - Fourth of July
Stone Temple Pilots - Sex Type Thing