These are two videos of a woman demonstrating a Soundwave tattoo (previously) of her son singing 'You Are My Sunshine'. It's cute. Of course,as somebody pointed out in the comments, the Soundwave program isn't actually reading the tattooed soundwave directly, or it just recognizes it (like a barcode) and plays the pre-stored audio file you bear linked to it. Oh,and to use the software it costs $40 for the first year and $10 every year thereafter. Still, I guess that's the price you bear to pay whether you want a singing tattoo, or because I'm not sure you could even tattoo readable waveforms with the precision essential to not all sound like two raccoons fighting in a dumpster.
Keep going for the video.
Source: geekologie.com