I love that music has become so portable that you could actually complain that this form factor takes up too much space. Here's a list of album formats that we

I love that music has become so portable that you could actually complain that this form factor takes up too much space. Here's a list of album formats that were around before MP3s, all of which are larger in size than a button: CD Minidisc Cassette Tape 8-Track Tape Reel-to-Reel Tape Record Wax Tube With only one exception above, music storage has gotten smaller with every new format. At this point it's essentially zero. Still, if you told a kid from the 80s that his whole wall of cassette tapes would one day fit in a McDonalds bag full of buttons, he'd be pretty stoked.