COMMON If you buy something for a song, you buy it for very little money. She was wearing a beautiful hat which she'd picked up for a song in Camden Market. She wore a lot of costume jewellery which she bought for a song off second-hand stalls. Note: You can also say that something goes for a song or is sold for a song, meaning that it is sold very cheaply. In the early nineties their shares went for a song. I know of good, solid, stone-built houses which have been sold by councils for a song. Note: This expression may be a reference to printed song sheets, which were very cheap. Alternatively, it may refer to small amounts of money that passers-by give to someone who is singing in the street. From the free dictionary - Need more?