When your friends who make music announce they are getting married, of course you are going to want to make them a wedding invitation that doubles as a paper record player:
There is WAY too much to love here; starting with the fact that it would have been really easy for this designer to burn the song onto a CD, and package it with the invitation. Instead, she did a TON of research, and made a record. And since few people have turntables these days, she also made a paper record player to play said record on.
So much thought, so much care (so much science! And math!) went into this, it's awesome, adorable, and, well, awesome, all rolled into one. Plus, imagine the bragging rights the bride and groom have: "Oh, your wedding invitations were made out of paper, too? Yeah, but could they PLAY RECORDS???"