The BIC Music City MP3 player is a conceptual music device unlike any you've probably ever seen before. BIC was designed by Sebastian Garcia and is based around the concept of physical playlists.
BIC embodies many small MP3 players designed to hold individual playlists. Each BIC Music City MP3 player can be loaded with a different playlist allowing you to grab only the songs you want to take with you. The pint-sized players can stack on top of one another to charge and have a simple control scheme similar to that of the iPod Shuffle. While I doubt many people would want to have to account for multiple MP3 players, Garcia's concept is still interesting and uncoventional nonetheless.
The BIC Music City MP3 Enables You to Create Physical Playlists
Michael Hines — December 15, 2011 — Tech
References: sebastiangarciadesign.tumblr & designbuzz