KISS lead singer Paul Stanley underwent successful surgery on October 25, 2011 for "recurring vocal cord issues" that the musician said "come with 40 years of preaching rock 'n' roll." Stanley told The Hollywood Reporter that he powered through four decades of concerts "through sheer willpower" so his band could "cram in as many shows as possible to maximize profit." But, he cautioned, "the nature of rock singing is a strain on the voice and when you compound that with that amount of shows, you're not giving yourself time to recuperate and the problem is compounded… I was finding myself working harder and harder to do what was once effortless, and having already passed through puberty, I was surprised to hear my voice cracking."In a new segment scheduled to air on January 9, Paul shares his thoughts with ABC's "Nightline". KISS has completed recording its new album, "Monster", for a late spring release. Songtitles set to appear on the CD include "It's A Long Way Down", "Back To The Stone Age", "Shout Mercy", "Out Of This World", "Wall Of Sound" and "Hell Or Hallelujah". Stanley recently admitted that he's never surprised by how deep KISS' fan devotion continues to run worldwide. "It really for me, resoundingly once again, I guess validates for me why this band exists," he told The Pulse Of Radio. "It's not a tepid recreation of the past, it's really an ageless beast that dominates at will. It's timeless."