Well, Nintendo announced that the 3DS's online servers are being shut down soon. As a sort of farewell, I've picked out a lot of tunes from the 3DS and compiled them into a single hour and a half long video for you to vibe to.

Timestamps:
0:00 Nintendo eShop Loading
0:26 Nintendo eShop June 2011
2:29 Puzzle Swap Collected Pieces
5:19 Health & Safety Information
6:50 AR Games Clock
8:38 Face Raiders Face Collection
10:02 Nintendo eShop Options
11:38 Nintendo Network ID Account Settings
13:26 Notifications
14:29 Activity Log Software Library
16:17 Nintendo 3DS Camera Album
18:11 AR Games Globe
21:25 System Settings
23:31 Flipnote Studio 3D Tutorial
25:18 Nintendo Zone
28:04 AR Games Graffiti
31:29 Mii Maker
33:50 Nintendo Anime Channel
36:01 Nintendo Badge Arcade Badge Box
37:20 Nintendo 3DS Camera Slideshow Chilled
42:05 Nintendo Video
44:06 Swapdoodle Lesson Store
47:33 Spotpass TV
49:59 Friends List
51:27 Miiverse Loading
53:14 Nintendo 3DS Camera Slideshow Ballad
55:33 Nintendo Letter Box (Swapnote) Reading A Letter
58:22 AR Games Star Pics
1:01:37 Themes Shop
1:04:16 Internet Settings
1:06:18 Nintendo Badge Arcade Badge Book
1:08:53 Nintendo eShop November 2012
1:11:24 Nintendo eShop September 2013
1:13:51 Streetpass Quest (Find Mii) Dark Room
1:14:47 Face Raiders Bonus Stage 2
1:15:29 Nintendo eShop January 2014
1:18:19 AR Games Main Menu EX
1:20:02 Nintendo eShop June 2015
1:23:05 Nintendo 3DS Camera Slideshow Ceremonial
1:24:58 Streetpass Mii Plaza Theme 1
1:27:01 Nintendo eShop May 2016
1:29:39 System Transfer Send
1:31:21 Puzzle Swap Theme
1:32:50 Ambassador Certificate