It took me 2 days to make this by importing MID files into OS, but anyways, here's the list of the MIDI arts:
3D Pinball
Android Robot
Beeline Logo
Birdo (SMB2)
Blocks (Block'd)
City Bloxx
Electric Guitar
Globe Telecom Logo
Google Drive Logo
Ice Block
iPhone 5S (SE)
Joystick
Lenovo Tab 2
Mine Blocks Human
Nokia X2-00
Pickaxe
SMB2 Mushroom
Windows XP Logo
Xiaomi Redmi 7A
1up Mushroom
Alien
Amy Rose
Apple Logo
App Store (Apple)
Sony Xperia Arc S
AT&T Logo
Audacity Logo (Outlined)
Low Battery
Bedrock
Bee
Biohazard Sign
Bowser
Alarm Clock
Insane Face
Easy Face
Castle
Cherries
Google Chrome
Clank
Creeper
Creeper (3D)
Rubik's Cube
Red (Angry Birds)
Daft Punk Logo
Dancing Android
Dandelion
Mini Android Robots
Droplet
Nokia E52
Electricity Sign
Mozilla Firefox
Samsung Galaxy S2
Samsung Galaxy S9
Nintendo Gameboy
PacMan Ghost
Speaker
Google Logo
Grinning Face Emoji
Acoustic Guitar
Star
Google Hangouts Logo
TheHartcorSpartan76
Huavei Logo
Internet Explorer Logo (Outlined)
iPhone 5S
iPhone X
iTunes
Android Jelly Bean
Kahoot Logo
Bin
King Pig
Ladybug
LG C1100
LG G2
LODY
Mac Logo
Mario
Xiaomi Mi Logo
Mobile Data
Motorola Logo
MS Paint
Microsoft Word
Nokia N73
Nokia 3310
Nokia Hands
Nokia Lumia
Musical Note
OMFG
Opera Logo
Oppo F3
PacMan and Ghost
Polar Bear
Question Mark
Mario Question Box
Radiation Sign
Radioactivity Sign
Ratchet
Motorola RAZR V3
Robot Toy
Bicycle
Running Man
Sad Mac
Car
Car Engine
Skeleton (Minecraft)
Skype Logo
Snake
Snapchat Logo
Snowflake
Snowman
Soccer Ball
Sonic the Hedgehog
Sun
Sword
Sześcian (aka Foxy the Fox)
Silver Bars
Sony Ericsson K750i
Earth
Tetris Blocks
To Be Continued
Tux (Linux)
Twitter
UFO
Viber Logo
Warning Sign
WiFi
Xiaomi Mi3
YouTube

(note: added the cropped part of the android robot midi art, that's next to the first midi art in this sequence (3d pinball))