Question: Is there a block you can use to create a change in pitch? I'm trying to create a custom sound that can have dynamic pitch.
Bonus points if there's any way to change other variables inside scratch without changing the custom sound itself, like changing the speed at which it plays.

Dear FaR52,

There is no known block that can change the pitch of a sound. You can easily make your own sounds with custom pitches using the note blocks.
Here is an example:

This would play every note for 0.5 beats
There are also two variables that contribute to the sound:

See Instruments & Notes for more details

*insert sigh here*
I'm trying to play a custom MP3, not a regular set of

Instead, I'm looking to play a mp3.

You cannot, in the next Scratch generation(Scratch 3) it will be included probably.

FaR52 wrote:

*insert sigh here*
I'm trying to play a custom MP3, not a regular set of

Instead, I'm looking to play a mp3.

It's just not possible, sadly. You'll either have to wait for 3.0, or add multiple copies of the sound and manually change their pitch in some other program.