My son, Mikkel, wanted a scarf and he wanted it to be an exact copy of a real piano keyboard with 88 keys. Every key had to have the real size.
I knitted it with 3 mm needles, wich resulted in almost perfect size. I knitted it double and sew it together. The scarf is knitted in intarsia. I used 2 balls of black and 3 balls of white at the same time, so I did not have to breake the yarn.
My son, Mikkel, has been playing classical music on his piano since he was 6 years old, now he is 22.
If you like Liszt, you can hear Mikkel on:
http://www.youtube.com/watch?v=cYGnQVpoQQQ