But for me, if we're talking about romance, cassettes wipe the floor with MP3s. This has nothing to do with superstition, or nostalgia. MP3s buzz straight to your brain. That's part of what I love about them. But the rhythm of the mix tape is the rhythm of romance, the analog hum of a physical connection between two sloppy, human bodies. The cassette is full of tape hiss and room tone; it's full of wasted space, unnecessary noise. Compared to the go-go-go rhythm of an MP3, mix tapes are hopelessly inefficient.