Sweet tells Totally Driven Radio: "Album sales don't equate to followers on Facebook and Twitter. If you have a million followers on Facebook and sell 10,000 copies of an album, something's wrong.

"There are reasons that play into it, obviously, such as people just don't buy music these days, people download, the economy's bad, people don't have the money - it goes on and on. But there's still something deeply puzzling about that."