Earlier this year at CES 2016, Sony unveiled a unique Bluetooth speaker namely- Sony Glass Sound Speaker. This Glass speaker is now up for purchase and is available for $799 exclusively from MOMA store.
As you can see in the above pic it doesn't look like any other speaker, it is designed this way entirely on purpose. This speaker is meant o provide both music and lighting for your next gathering. That glass tube tweeter is for sound, it emits audio in every direction (360 degrees).