You can use tiktok to promote your yoga products. It's purely organic traffic and relatively short. Lot of people don't mind watching short videos. If timing was right your ideal customers might look into more details of your products. There are ton of free tiktok video editors to make your product look amazing. Some of them are veed.io typito.com clideo.com. Source: over 2 years ago

Free Music Archive - Music for video, podcasts, etc licensed under Creative Commons. - Source: dev.to / 4 months ago

Put it on sites where you can get free music (usually CC-BY licensed) - like https://freemusicarchive.org and several others. Source: 10 months ago

Check out the free music archive. https://freemusicarchive.org/ Just follow the terms of the license for the song you’re looking to use. Source: 11 months ago

Free Music Archive has royalty free Creative Commons music. Tons of it, though you have to check the licenses carefully. A lot of them are for non-commercial projects only, so if you ever plan to sell an ad or otherwise make money on your show, don't use those. Still a lot to choose from, though, at least the last time I used it a couple years ago, the discovery tools weren't great. https://freemusicarchive.org/. Source: about 1 year ago

I've used https://freemusicarchive.org/ before. Should show the copyright info for each song. Source: about 1 year ago