what's that playing on the radio?

name this singer. and don't cheat. here's a hint: if you listened to pop music in the 70', 80's or even the 90's -- you know this voice.

here's a snippet of a bio:

For two years, ________ played sessions and performed with The Lost Souls. In 1967, he left that band to join The Hassles, a Long Island band that had signed a contract with United Artists Records.

Over the next year and a half, they released The Hassles in 1967, Hour of the Wolf in 1968, and four singles, all of which failed commercially.

Following The Hassles' demise in 1969, he formed the duo Attila with Hassles drummer Jon Small. Attila released their eponymous debut album in July 1970, and disbanded the following October. The reason for the group's break-up has been attributed to ________'s affair with Small's wife, Elizabeth, whom ________ eventually married.