- Music stores: Check local music stores that specialize in sheet music or educational music. They may have a section dedicated to clarinet music or video game arrangements.
- Music publishing websites: Websites such as Sheet Music Direct, Musicnotes, or Amazon's sheet music section offer a wide variety of sheet music, and you may be able to find the Mario theme song arranged for clarinet on one of these sites.
- Online clarinet communities: There may be online communities or forums dedicated to clarinet players where you can ask for recommendations or share resources.
Additionally, you can try searching online for "Mario theme song clarinet sheet music." This may lead you to websites or other resources that provide the sheet music you are looking for.