It could be purely instrumental but it's called "Buy a song," But we don't want to use that sort of parlance.

可能买的是纯器乐,却被称为"买首歌",但我们不想用那种说法

耶鲁公开课 - 聆听音乐课程节选

It doesn't see me, feel me, speak to me I don't know, there's some song that sounds a little bit like that.

它看不见，没有感官，有首歌就是那样唱的。

斯坦福公开课 - 微软CEO-Steve.Ballmer谈科技的未来课程节选