Music Block

Music Blocks are objects that appear in Super Mario Maker, Super Mario Maker for Nintendo 3DS, and Super Mario Maker 2. They are derived from Note Blocks, and function identically, while also playing a short musical note when an object lands on it. A Music Block can be placed by shaking a Note Block in Super Mario Maker and Super Mario Maker for Nintendo 3DS, or by pressing and holding a Note Block and selecting the Music Block from the context menu, in Super Mario Maker 2.

The pitch of the note that is played depends on the Music Block's height: for example, a Music Block placed one block above the bottom of the level will play a low note, while placing it towards the top of the level will play a high note. In addition to playing different pitches of notes, the instrumentation varies depending on what object lands on the Music Block. For example, Mario's sound is a steel drum, a Super Mushroom's is a chiptune, and a Goomba's is a piano. Due to this functionality, users have created levels that drop different objects onto Music Blocks to play customized music.

Super Mario Maker
There are a total of 51 possible sounds that can be produced from Music Blocks in the original Super Mario Maker including alternate forms of select objects. * signifies that the instrument is similar to that of another object, although the sound itself is distinguishable.
 * Mario - Steelpan
 * Yoshi - Oboe
 * Yoshi's Egg - Cowbell
 * Super Mushroom/Weird Mushroom - Square wave
 * Fire Flower - Piccolo
 * Super Star - Celesta
 * 1-Up Mushroom - Electric organ
 * Mystery Mushroom - Pipe organ
 * Coin - Sleigh bell
 * Buzzy Beetle/Buzzy Shell - Detuned bell
 * Spiny/Spiny Shell - Trumpet
 * Vertical Trampoline - Cymbal
 * Horizontal Trampoline - Hi-hat
 * P Switch - Snare drum
 * POW Block* - Bass drum
 * Koopa Clown Car/Fire Koopa Clown Car - Synth chord
 * Goomba/Galoomba - Piano
 * Green Koopa Troopa/Green Shell - Xylophone
 * Red Koopa Troopa/Red Shell - Vibraphone
 * Green Beach Koopa - Bark
 * Red Beach Koopa - Meow
 * Piranha Plant/Jumping Piranha Plant - strings
 * Fire Piranha Plant - strings
 * Bill Blaster - Timpani
 * Cannon - Timbales drum
 * Hammer Bro - Electric guitar (lead)
 * Sledge Bro - Slap bass
 * Thwomp - Taiko drum
 * Skewer - Gong
 * Bowser* - Electric guitar (bass)
 * Bowser's fireball rain (Super Mario World) - Shanai
 * Bowser Jr. - Saxophone
 * Monty Mole - Dulcimer
 * Bob-omb - Orchestra hit
 * Spike Top - Harpsichord
 * Dry Bones - Flute
 * Magikoopa - Chorus
 * Muncher - Electric piano (tines)
 * Wiggler - Tubular bells
 * Goomba's Shoe - Accordion (bass clef)
 * Empty Shoe* - Temple block
 * Goomba's Stiletto* - Accordion (treble clef)
 * Chain Chomp - Electric piano (chorus)
 * Chain Chomp's stake - Woodblock
 * Big Mushroom (Classic) - Shamisen
 * Big Mushroom (Modern) - Shamisen

Super Mario Maker 2
Most sounds from Super Mario Maker return in the sequel, and a total of 16 new sounds are present.

Objects exclusive to the Super Mario 3D World style also do not have sounds, as Music Blocks are absent in this game style. Finally, the Super Leaf, Cape Feather, Propeller Mushroom, Boo, Boo Buddies, and Lava Bubble do not have sounds, despite the fact that they can land on a Music Block if they are attached to a parachute. * signifies that the instrument is similar to that of another object, although the sound itself is distinguishable.
 * Luigi/Toad/Toadette/Link - Steelpan (shared with Mario)
 * Superball Flower* - Pipe organ (shared with Mystery Mushroom from Super Mario Maker)
 * Goombrat/Goombud - Honky-tonk piano
 * Boom Boom - Tuba
 * Icicle - Synth bell
 * 10-Coin/30-Coin/50-Coin - Windchimes
 * Rotten Mushroom - Synth bass
 * Dry Bones Shell - Flute (shared with Dry Bones)
 * Rocky Wrench - Acoustic guitar
 * Spike - Electric bass
 * Spike Ball - Tom-tom drum
 * Snowball - Synth tom-tom
 * Pokey - Steel guitar
 * Snow Pokey - Bagpipe
 * Master Sword - Synth brass
 * Link's Bombs - Chicken cluck