Metal with clean vocals

Except no.
Hammerfall's Crimson Thunder is pretty heavy for power metal...worth a shot, I guess. Listen to the song Hearts on Fire.

Also, Aghora are fairly heavy and use clean vocals.
 
Amorphis in general have some great clean vocal parts.

Check out Sabaton and Powerwolf. They're both power metal bands but their vocalists have unique singing styles.

And thanks for covering for me InFlames. :cool: