ArtMaster, the Prague-based company behind AI-powered piano-learning app Artie, has raised a USD $2.4 million seed round.
New investors in the round include investment firms Factorial Capital and Reflex Capital, as well as AI music platform Moises.
ArtMaster names Warner Music Group CEO Robert Kyncl and Jaroslav Beck, a co-founder of Beat Saber developer Beat Games, among its past supporters.
ArtMaster says it will use the capital to keep building its AI models, which are trained entirely on its own proprietary data and designed to “support independent development of creative skills, starting with musical performance.”
The round also brings in Nir Zicherman, co-founder of podcast platform Anchor, which Spotify agreed to acquire in 2019.
Grant Davis, founder of AI creative tool Wand, has also invested.
So has Eliška Vorel, a senior product manager for Gemini at Google DeepMind.
Factorial Capital founder Matt Hartman was previously a partner at Betaworks Ventures, which became the first investor in AI platform Hugging Face.
“In my view, one of the highest and best uses of AI is to help people learn. AI models have expanded beyond language and can now listen to people play music and meet them at their skill level. This unlocks an entire category of how people can learn beyond ChatGPT.”
Matt Hartman, Factorial Capital
Hartman said: “In my view, one of the highest and best uses of AI is to help people learn. AI models have expanded beyond language and can now listen to people play music and meet them at their skill level.
“This unlocks an entire category of how people can learn beyond ChatGPT.”
According to ArtMaster, Artie reached more than 500,000 users and over 100 million views across social media channels within a year. The app is currently limited to piano on iOS, with guitar, other instruments, and an Android version on the roadmap.
Since October 2025, Artie’s paying subscribers have grown 38% month-over-month and its monthly recurring revenue has grown 39% month-over-month, the company says.
ArtMaster did not disclose absolute subscriber or revenue figures.
The company adds that the top 10% of Artie’s users average sessions of 36 minutes.
ArtMaster also claims that more than 700 million people worldwide spend 65 billion hours a year learning music.
Around 50 billion of those hours are spent in solo practice without a teacher, according to the company, which did not cite a source for the figures.
ArtMaster started out in 2018 as a music school in Prague, which the company says Radim Vysoký co-founded with Michal Novák.
The company traces the school’s origins to Vysoký‘s frustration as a music student, when he wanted to start playing his favorite songs right away instead of working through drills and the classical canon.
The school grew during the COVID-19 lockdowns after it moved its teaching online and began producing video lessons, according to ArtMaster.
But those video lessons lacked one element of in-person teaching: individual feedback from a teacher, which Artie was built to provide.
“Beginners are often making six mistakes at once. They need help prioritizing what to tackle first,” said Vysoký.
“Even the best video can’t give you that. We decided we needed to create an app that would give real guidance, structure your practice, and help you meet your goals as a learner more quickly.”
ArtMaster says that, as its AI models develop, Artie will go beyond assessing playing and recommending lessons, and will create and adjust lessons itself based on each learner’s tastes and needs.
When a learner gets stuck on a passage, for example, the app will break it down, simplify it, and generate practice exercises in real time, according to ArtMaster.
“AI can personalize learning for any physical skill, and this is where we’re heading, building on what we’ve achieved for music,” Vysoký added. “We’re just starting with music, and we plan to go way beyond it.
“Music demands you develop muscle memory, analytical ability, and emotional expression all at once, and these elements are transferable to other skills. We plan to apply our models to more instruments and then to more creative skills that enrich people’s lives.”
CzechCrunch reported in March 2022 that Kyncl, then at YouTube, and Beck had invested $500,000 in ArtMaster through their joint investment vehicle, JARO Capital, for a 15% stake.
The pair invested again as part of a $500,000 round, CzechCrunch reported in January 2024.
ArtMaster then closed a funding round of more than EUR €800,000 in March 2025, led by Purple Ventures, according to Vestbee.
That round was raised to fund Artie‘s launch and development, the report said.
“AI can personalize learning for any physical skill, and this is where we’re heading, building on what we’ve achieved for music.”
Radim Vysoký
Beat Games, the studio Beck co-founded, was acquired by Facebook, now Meta, in 2019.
Moises is the consumer-facing platform of Music AI, whose tools for musicians include stem separation and chord recognition.
Music AI raised a $40 million Series A round in January 2025.
In March this year, Moises said its platform had more than 70 million users worldwide, as it appointed Charlie Puth as Chief Music Officer.
In 2021, music-learning app Yousician, which also gives users real-time feedback on their playing, raised a $28 million Series B round.
New investors in that round included Paul McCartney‘s MPL Ventures.Music Business Worldwide