Built for gigging musicians, worship bands & studio players
The Number System Studio is an interactive workspace: tap any scale degree to hear it, build charts on the fly, and convert any chord chart into Nashville numbers — in every key, on any device.
$5.99/month · Full access to every tool. Have a promo code? Enter it at checkout.
About NashvillePro
NashvillePro turns the Nashville Number System into a tool you can actually play. Hear every degree, see every shape in every key, build progressions on the fly, and convert any chord chart into numbers in seconds.
Instead of “G, Em, C, D,” the chart just says 1 – 6m – 4 – 5. Change keys, change capos, change singers — the chart never changes.
Drop in a PDF, DOCX, or plain-text chord chart. Chord placement above the lyrics is preserved exactly as written.
NashvillePro maps every chord to its scale degree — majors, minors, diminished, and slash chords included.
Hear the progression, edit any degree by hand, then export a clean color PDF with the title and artist on top.
One studio for learning, practicing, and prepping charts.
The central workspace for navigating the Nashville Number System. Reference every key, build charts, and convert songs without switching contexts.
Drag intro, verse, chorus, and bridge sections into a full Nashville Number System chart, set the tempo, and loop playback before the gig.
Upload a PDF, DOCX, or text chord chart and convert it to a formatted Nashville Number System chart with chords preserved above the lyrics.
A lightning-fast reference for every key. Tap a number to hear the chord, see the CAGED shape, and map the root notes across the fretboard.
A live look at the studio — tap a number, see the shape, hear the chord.
Pick a number and instantly see the real fingering on the neck — in any key.
Flip to Fretboard Roots to map every position — tap a note to hear it played.
Read numbers the way the pros write them, and transpose on the fly when the singer changes keys.
Rehearse in any key. Your team's charts stay portable and singer-friendly week after week.
Learn to hear function, not just chord names. Build ear training that actually sticks.
The basics, answered — for players who are brand new to numbers.
The Nashville Number System is a chord-charting shorthand that replaces chord names with scale degrees. Instead of writing G – Em – C – D, a chart reads 1 – 6m – 4 – 5, so the same chart works in every key.
Upload a PDF, DOCX, or plain-text chord chart to the NashvillePro converter, choose the original key, and the app returns a formatted Nashville Number chart with the chord positions preserved above the lyrics. You can edit the result and export it as a color PDF.
No. That is the whole point of the system. The numbers describe function, not pitch, so one chart covers every key. In NashvillePro you switch keys with a single tap and the numbers stay put while the chord names update.
A lowercase m after a number means a minor chord (2m, 3m, 6m). A degree sign means diminished (7°). A slash such as 1/3 means the 1 chord played over the 3 in the bass.
Yes. Worship and church bands are one of the biggest groups using the system, because vocalists often need different keys week to week. One number chart serves the whole team regardless of key or capo position.
NashvillePro is $5.99 per month for full access to the chart builder, the chord-to-NNS converter, the key reference guide, and all export tools. You can cancel anytime.
One plan for solo players. One for the whole band. Cancel anytime.
$5.99/mo
Full access to every tool. Have a promo code? Enter it at checkout.
Cancel anytime. No hidden fees.
$49.99/mo
For bands, worship teams & studios. Full access for you, plus 10 studio seats to hand out.
Cancel anytime. No hidden fees.
