Barry Manilow
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Cover versions: Captain & Tennille meet Barry Manilow

BBC Music has launched a poll to find the greatest cover version of all time. But many people do not know that some of the most famous songs in pop history were covers.

Barry Manilow won Song Of The Year at the 1977 Grammys, but it was actually written by former Beach Boy Bruce Johnston and first appeared on Captain and Tennille's 1975 album Love Will Keep Us Together.