Accordion Diatonic Cassoto

Whether you play 3-row button accordion for Regional Mexican, Tex-Mex, or traditional American folk styles, this simulator gives you realistic push-and-pull bellows action, authentic accordion sounds, and step-by-step learning tools.

Learning mode: songs, scales & chords

• Learn authentic Norteño, Tejano, Corridos, and traditional songs.
• Master essential scales, chord progressions, and ornaments used in 3-row button accordion tunings.
• Practice with exercises and interactive levels built exclusively for diatonic button accordion. The app shows you the exact finger to press for every button!

Realistic accordion sounds & registers

• 120 accordion models, each with an authentic, distinct sound!
• Realistic acoustic tones with 50+ registers: Cassotto, Musette, Master, Violin, Concertina, Bassoon, Bandoneon, Piccolo, Organ, Harmonium, and many others!
• Create and customize your own accordion with your favorite colors and designs.

Backing loops, percussion & metronome

• Authentic rhythm backing tracks: Norteño, Tejano, Cumbia, Huapango, Vallenato, Waltz, Tango, and more.
• Built-in visual metronome: Adjust tempo (BPM) on all loops and metronome to practice at the right speed.

Record and share your songs

• Record and play back your accordion music.
• Save and export your recordings as Video or MIDI files.
• Share your accordion covers on social media with just 1 click!

Customize & easy learning

• 100+ FREE Tunings: G/C/F (Sol), F/Bb/Eb (Fa), E/A/D (Mi), among many others...
• Display notes on each button with visual key lighting when playing.
• Resize buttons to fit your screen and fingers. Play up to 3 rows (31 to 34 buttons) and 16 basses.
• Real bisonoric push & pull bellows simulation: change notes opening and closing the bellows just like a real accordion!
• Versatile for multiple genres: Perfect for Norteño, Tex-Mex, and Tejano Conjunto, as well as Cajun, Zydeco, and Irish button accordion players!

Cassotto Diatonic Button Accordion Melodeon Master is an educational, fun, and FREE app. Designed for both kids and adults to learn and play songs in Norteño, Tex-Mex, Tejano, and traditional folk styles, practicing with loops, rhythms, and metronome in perfect tempo.