In the startup world, companies like Splice and Amadeus Code are building similarly AI-facilitated assistants for songwriters and producers. Three of the 21 startups in the Techstars Music accelerator roster to date -- Amper, Popgun and SecondBrain -- have built their core product around AI-generated music. Both Amper and Popgun have closed additional funding rounds from the likes of Khosla Ventures, Two Sigma Ventures, Horizons Ventures and Foundry Group since graduating from Techstars.