Slow down without changing pitch
Give your fingers time to catch up. Work through a difficult solo at a slower tempo, while keeping the recording in its original key.
A better way to practise music
ShifterrPractice, with purpose.
Slow it. Loop it. Master it.
Meet Shifterr — a dedicated music-practice device that helps you slow down difficult passages, loop the sections you want to master, and transpose songs into your key using simple physical controls.
Get early accessTargeting Kickstarter in February 2027.
Follow the developmentBe there
Be there
for the first note.
Join for demonstrations, development updates and early launch news.
Join the Kickstarter launch list
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Make the tricky
parts click.
Loop a difficult section
Set the beginning and end of a passage with A/B looping. Repeat that tricky phrase and keep your attention on your instrument.
Transpose to a different key
Shift the pitch of a recording to explore a different key or practise in a range that suits you.
Practise with music
from your phone.
Designed to work with music played on your phone. Supported connections, phones and applications are still being tested and will be confirmed before launch.
We’ll show the real workflow before launch. Universal streaming compatibility and Bluetooth transmission are not confirmed.
Stay focused
on playing.
A tactile dial, display and dedicated physical controls put practice adjustments within reach. Spend less time navigating a touchscreen and more time working on the passage in front of you.
Features, compatibility, pricing and launch timing may change as development progresses.
Built by musicians,
for musicians.
We’re a two-founder team in the UK building a more focused way to practise. Working hardware and software prototypes are helping us refine the controls, product design and manufacturability. We’ll share honest demonstrations and development updates as we go.
Meet Sonalux ↗A few things
you might ask.
What does Shifterr do?
Shifterr is being developed for pitch-preserving tempo changes, A/B looping and pitch shifting, with a dedicated dial and physical controls.
Do I need to import songs?
The aim is to practise with audio played from a connected phone. The supported workflow and connections are not yet final; we’ll demonstrate them before launch.
Which phones and apps will it support?
Compatibility is not yet final. We’re testing supported connections and applications. The render is a design illustration; its labels do not confirm included features or Bluetooth support.
Can I buy one now?
Not yet. Shifterr is in development. Joining the list is not a purchase, reservation or guarantee of an early-bird reward.
When does Kickstarter start?
Our provisional target is shown above. It depends on product and manufacturing readiness, and may change.
What does joining the list mean?
You can choose to receive product updates, demonstrations and Kickstarter launch news. Confirm your email to complete signup, and unsubscribe at any time using the link in our emails.
What will it cost?
Pricing and rewards are not yet final. We’ll share confirmed information when it’s ready.
Your next breakthrough
starts with practice.
Get early access ↗No purchase. No reservation. Just updates, with your permission.