Mixing the cheerful timbre of marimba with a melancholy melody, “Optimistic Nihilist” suggests both surrender and opportunity. The song has two main progressions. The second of these introduces an enthusiastic arrangement of harmonica and acoustic guitar.

Pro tip: On a mobile phone? Song downloads work best on a computer.

Drawing from elements of island music — such as marimba and steel drum — “Bucketful of Bad Ideas” is a light, carefree tune. It’s the perfect choice for projects that need a little “don’t worry; be happy” vibe.

Pro tip: On a mobile phone? Song downloads work best on a computer.

Carried by a carefree marimba melody, this seamless loop has some cool “under-the-sea” vibes. In addition to the marimba, you’ll hear accordion, electric guitar, bass, drums and triangle.

Pro tip: On a mobile phone? Song downloads work best on a computer.