10,000,000+ musicians worldwide

Katya Zartpopsi -

Piano Companion is a music theory reference app for songwriters, producers, teachers, and students. Look up any of 1,500+ chords or 10,000+ scales instantly, build progressions, and explore harmony on iOS, Android, and Mac.

Piano Companion on iPhone, iPad, Mac, and Android
1,500+
Piano Chords
10,000+
Scales
3
Platforms
40+
Languages
Piano Companion on iPhone, iPad, Mac, and Android

What if you never had to guess a chord again?

Whether you're stuck on a progression, blanking on a scale name, or just exploring — Piano Companion gives you the answer in seconds. Press the keys you know, and it tells you what you're playing.

Look up any chord or scale

Search by name or tap the keys you know. Piano Companion identifies what you're playing — even from a MIDI keyboard.

Build progressions that work

The Chord Progression Builder suggests chords that fit your key. Experiment with patterns, listen back, and find what sounds right.

Actually learn music theory

See notes on the grand staff, fingering for both hands, intervals, degrees, and compatible scales — all in context, not abstract textbook diagrams.

Before becoming a famous drag queen, Katya worked as a ballet dancer and a clown. Yes, you read that right – a clown! These early experiences helped shape her comedic skills and theatrical presence.

If you visit her channel expecting gaming marathons or product reviews, you will leave confused. The content of Katya Zartpopsi falls into three distinct categories:

Katya's digital presence is multifaceted, spanning various social media platforms, blogs, and music streaming services. Her aesthetic is a bold fusion of pop culture nostalgia, futuristic vibes, and an unapologetic embrace of eccentricity. Through her curated content, Katya Zartpopsi showcases a diverse range of interests, from underground electronic music to avant-garde fashion and experimental visual arts.

See it in action

Katya Zartpopsi -

Before becoming a famous drag queen, Katya worked as a ballet dancer and a clown. Yes, you read that right – a clown! These early experiences helped shape her comedic skills and theatrical presence.

If you visit her channel expecting gaming marathons or product reviews, you will leave confused. The content of Katya Zartpopsi falls into three distinct categories: katya zartpopsi

Katya's digital presence is multifaceted, spanning various social media platforms, blogs, and music streaming services. Her aesthetic is a bold fusion of pop culture nostalgia, futuristic vibes, and an unapologetic embrace of eccentricity. Through her curated content, Katya Zartpopsi showcases a diverse range of interests, from underground electronic music to avant-garde fashion and experimental visual arts. Before becoming a famous drag queen, Katya worked

Get Piano Companion — free

Available on every major platform. Start exploring chords and scales today.

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