I'm sure this is possible... Uhm, Little Red Kippah for instance. See on Shabbat you can't play the radio, use your iPod, watch MTV or any of that stuff. The one thing you can do is sing. So how whacky would it be if you sang traditional Shabbat songs to the tune of classics by Prince? I mean Shlomo Hamelech was once a Prince so it's gotta be ok, right? I mean he built the Beit Hamikdash!