Impulse Tracker Modules

Impulse Tracker Modules (.it files) are a sequenced music format that Roblox used to natively support. Popular songs such as 'The Great Strategy' and 'Wind of Fjords' were originally uploaded to the platform in this format. This feature was removed sometime in late 2019, and these songs no longer play in-game. Impulse Tracker Modules have the .it extension.

The benefit to tracker music is that the file size is much smaller compared to MP3 or OGG, at the cost of flexibility and ease of use. This was useful when internet download speeds were much slower in the early 2000s than they are today.