Pop star Madonna says she doesn't know which of her track will be a hit and is surprised when the songs that she thinks are retarded become chartbusters.
The 51-year-old singer always struggles to spot her future chart-toppers when she is recording an album, reports contactmusic.com.
"I've never been a good judge of what things are going to be huge or not. The songs that I think are the most retarded songs I've written, like 'Cherish' and 'Sorry', a pretty big hit off my album 'Confessions on a dance floor' end up being the biggest hits," said Madonna.
