A 36-key harmonium that teaches you the raag as you play
SurSadhak's harmonium spans 3 octaves with authentic sample sound. Pick any of 117 raags and the keyboard highlights each note of its aaroh, avroh, pakad and alaap as it plays — with smooth meend glides between notes, in Indian or Western labelling.
36 keys
3 octaves, C2–B4, in a scrollable panel or full-width landscape view.
Raag-guided
Keys light up in sequence for any of the 117 raags in the library.
Meend glides
Smooth pitch slides between notes, not just discrete key presses.
Learn a raag the way a teacher shows it
Pick any raag and the harmonium plays its aaroh, avroh, pakad and alaap one note at a time, lighting the keys as it goes. Slow it down, hold notes longer, and sing along over a tanpura already tuned for that raag.
Get the app to explore all 117 raags
About the harmonium
How many octaves does the harmonium cover?
3 octaves (36 keys), C2–B4, scrollable in the panel view or full-width in landscape.
What does raag-guided highlighting do?
When you're practising a raag, the keys belonging to that raag light up as its aaroh, avroh, pakad and alaap play, so you can follow along note by note.
What is meend?
A smooth glide between two notes rather than a discrete jump — SurSadhak's harmonium supports meend glides for a more authentic sound.