[1][2] Together with Gary Scavone, he authored the Synthesis Toolkit and with Ge Wang the ChucK programming language.
Cook is also an avid conch shell musician, including the ancient conch-shell Peruvian instrument known as pututus.
[3] Cook is a founding advisor (since 2008) to Smule, a successful mobile music app company.
In 2012, Cook and Ajay Kapur received an NSF-funded grant [4] to create a programming and technology curriculum for art schools.
Beginning in 2013 with Ajay Kapur and others, Cook co-founded Kadenze, an online arts education company.