KaraOrchee

Your Orchestra,Your Way.

Sheet music that remembers your lessons.

Get early access Free during the beta.

KaraOrchee Notes · iPhone and iPad · TestFlight beta

I'm a teacher I'm a student or parent

AI Notes

How a lesson becomes notes.

One lesson · one recording

Playing

010203040 min

Teacher

0:00
4:00
7:001“Your left hand lets go the moment the right hand comes in.”
11:302“That’s not a mistake — that clash is on purpose.”
17:00
22:30
27:303“The bass sits on G for eight bars. Go somewhere with it.”
33:00
39:00

Bach — Prelude in C, BWV 846Sorted by the teacher · one tap per piece

Mozart — Sonata in C, K. 330

Czerny — Op. 599 No. 41

A sample note · Bach, Prelude in CBars 1–35 as printed

“Your left hand lets go the moment the right hand comes in.”“That’s not a mistake — that clash is on purpose.”“The bass sits on G for eight bars. Go somewhere with it.”“Your left hand lets go the moment the right hand comes in.”

Bars 1–3 as printed

A sample note · Bach, Prelude in C

Left hand stays down左手按住不放

Technique技巧Bar 1EN

Your teacher said

“Your left hand lets go the moment the right hand comes in.”

Both left-hand notes hold to the middle of the bar — the only notes here that last, so the whole sound sits on them. Keep them down until they’re played again.左手这两个音一直保持到小节中间——这里只有它们是拖长的音，整个小节的声音都靠它们撑着。按住，等后半小节再重新弹它们。

Left hand alone, both notes held.左手单独练，两个音都按住。
Add the right hand. Don’t let go early.加上右手，别提前松。
Hands together at tempo; listen for the hold.双手原速，听那个保持住的音。

Listen

Clash on purpose故意的碰撞

Musicality音乐性Bar 2

Your teacher said

“That’s not a mistake — that clash is on purpose.”

Step 1

Record the lesson once.

Step 2

It hears who is speaking.

Step 3

Sorted by piece.

Step 4

Every sentence finds its bar.

Step 5

A note your student opens.

The recognition engine

Under the page, it hears every note.

Lift the page; the engine comes apart.

It starts as sound: eight seconds, bars 1 to 3.

Sound is drawn as pitch over time.

A small model on the phone reads it.

Every key, judged more than 40 times a second.

The judgments become notes: pitch, start, end.

The follower finds each note on the page.

Back to one page: thirty-seven notes, heard.

Lift the page; the engine comes apart.

It starts as sound: eight seconds, bars 1 to 3.

Sound is drawn as pitch over time.

A small model on the phone reads it.

Every key, judged more than 40 times a second.

The judgments become notes: pitch, start, end.

The follower finds each note on the page.

Back to one page: thirty-seven notes, heard.

40+/sec
Checks every key
88keys
Every one heard
Real time
Right on the phone
92–94%
Note accuracy¹

¹ On a public piano benchmark, across our current models.

What's next

Notes is where it starts.

Chapter 1 · Hearing, on the Technology page

Bach, Prelude in CBars 1–6 as printed

Score following

The page keeps up as you play.

See it follow

In development · Patent pending

The accompanying orchestra

An orchestra that will follow you.

See the orchestra

Chapter 2 · Reading, on the Technology page

In development

From paper to a live score, with your marks

Your own sheet music, coming to the app.

Paper and marks

Who it's for

One page, two chairs.

I'm a teacher

You talk. It writes. You decide.

See how a lesson becomes notes

I'm a student or parent

Your teacher's own words, on the bars they're about.

What parents should know

For parents

What parents should know.

What is recorded: Only lessons a teacher or student chooses to record. Before it starts, they confirm that everyone in the room knows and agrees, and a timer stays on screen until it ends.
Who can see it: Notes from a teacher's lesson go to two people: the teacher and the student. The teacher reads each one before the student sees it.
Deleting it: Delete the account in the app's Settings, and its notes go with it. A student's voice is also removed from lessons their teacher recorded; only the date, piece and length stay.

Ages 13–17

They sign up and give your name and email address.
You get an email with one link to review the account.
You approve and their account opens. You can withdraw your approval later from the receipt we email you.

Until you approve it, they can't connect with a teacher or record or upload a lesson. KaraOrchee isn't available to children under 13.

Backing

2026TEDCOBaltimore Innovation Initiative
2025TEDCOUrban Business Innovation Initiative
2025Maryland Innovation CenterPumpkin Pitch, Third Prize
2025Johns HopkinsI&E Challenge
2024HopStartFirst place
2024PeabodyDean's Incentive Grant
Patent pendingUS provisional 63/911,980

Dive deeper

Technology Two chapters, Hearing and Reading, and where each part stands.

Bring it to your next lesson.

Launching October 31

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iPhone and iPad · TestFlight beta