What is the Nashville Number System?
Dec 29th 2025
What is the Nashville System?
If you play guitar or write songs, you’ve probably run into chord charts that feel confusing or hard to follow in different keys. The Nashville Number System is a powerful tool that solves this problem. By using numbers instead of chord names, it acts as a form of music notation that makes learning, transposing, and jamming with other musicians faster and simpler. Developed by Nashville studio pros, it is now used by musicians across all genres. Whether you are a beginner or an experienced player, understanding this system can improve your music theory knowledge and help you handle chord changes with confidence.
What is the Nashville Number Chart?
Also called:
- Nashville Number System
- NNS
The Nashville Number Chart is a visual song chart representation of the Nashville Number System. It was developed in the 1950s by Neal Matthews Jr. to make it easier to communicate chord progressions quickly. Instead of writing out chord names, musicians use numbers to represent the scale degree of each chord in a key. This system also improves ear training, as it encourages players to hear the relationship between chords rather than just memorizing shapes.
This system is popular because it allows players to change keys instantly without rewriting the chart. It is especially useful for studio sessions, live performances, and collaborative songwriting where time and flexibility are essential.
Example
Let’s take a simple chord progression in the key of C major: C – G – Am – F
The Nashville Number System assigns numbers to each chord (chord number) based on its position in the scale:
- C is the 1 chord (the root)
- D is 2, E is 3, F is 4, G is 5, A is 6, B is 7
- Minor chords are written in lowercase
So the progression becomes: 1 – 5 – 6m – 4
Now, if you want to play the same progression in G major instead of C, you just match the numbers to the new key:
- 1 = G
- 5 = D
- 6m = Em
- 4 = C
The progression in G major is: G – D – Em – C
This example shows why the system is so useful for guitarists of all skill levels: it lets you transpose songs instantly without rewriting chord names, while also improving your ability to recognize chord changes by ear.
How to Use the Nashville Number System
To use the Nashville Number System, start by identifying the key of the song. Assign each chord a number based on its position in the scale. For example, in the key of C major, C is 1, D minor is 2 minor, E minor is 3 minor, and so on. Write down the song chart using these numbers.
Musicians reading the chart can easily transpose the song into any key by keeping the same number sequence. Symbols can indicate chord quality, inversions, or rhythm, helping players understand the exact structure of the song at a glance.
4 Common Mistakes
While the Nashville Number System is straightforward, beginners often make a few common mistakes:
- Confusing major and minor chords
- Ignoring the key
- Skipping chord variations
- Transposing incorrectly
6 Tips & Tricks
Using the Nashville Number System on guitar becomes much easier with a few practical strategies:
- Learn scale positions: Know the major scale patterns on the fretboard. This knowledge makes it simple to identify which chords correspond to which numbers in any key.
- Use common chord shapes: For beginners, stick to open chords for 1, 4, and 5. As you advance, incorporate barre chords to play in different keys without changing fingerings.
- Practice transposing: Take a simple song in C major (1 – 5 – 6m – 4) and play it in G, D, or F. Practicing transposition builds flexibility and confidence.
- Mark minor and 7th chords clearly: Always note chord quality on your Nashville Number System chart to avoid confusion, especially when using barre chords that can hide chord differences.
- Connect numbers to shapes: Associate each number with a visual chord shape on the fretboard. This strategy makes reading charts faster and reduces mental translation.
- Start slow, then build speed: Play the chart slowly at first, focusing on correct chords and rhythm. Speed will come naturally as you get comfortable with the system.
By combining numbers, fretboard knowledge, and familiar chord shapes, you can use the Nashville Number System to jam in any key, write songs faster, and play confidently with other musicians.
Nashville Number Chart FAQs
How can I make a Nashville Number Chart?
To make a chart, choose the key of your song and write the scale degrees as numbers. Assign each chord in your progression to its corresponding number. Include symbols for minor chords, sevenths, or other variations. Importantly, keep it simple with one line per section of the song, such as verse, chorus, or bridge.
You can also read more about this system and how to create your own chart by reading The Nashville Number System by Chas Williams or downloading the The Nashville Number System iPad app at nashvillenumbersystem.com.
Is the Nashville Number System easy to learn?
Yes, if you already know basic music theory and scales. Once you understand how scale degrees correspond to numbers, you can read or write any chord progression in minutes. The system requires basic knowledge of music theory and scales, making it accessible to guitar players at any level. It becomes easier with practice, especially if you start by using it for familiar songs.
Why is it called the Nashville Number System?
It is called the Nashville Number System because it was developed in Nashville, Tennessee, by studio musicians in the 1950s. The system was created to streamline communication during recording sessions, where time was limited and multiple musicians had to play together efficiently. Using numbers instead of chord names made it easier to work in both major keys and minor keys.
What symbols are used in the Nashville Number System?
Symbols in the Nashville Number System indicate chord quality or modifications. For example, lowercase numbers usually show minor chords. A small circle can indicate diminished chords, while numbers followed by 7 show seventh chords. Other markings may show chord inversions, passing chords, or rhythmic accents. These symbols help musicians understand exactly how a chord should sound.
Can the Nashville Number System be used for all genres of music?
Yes, the Nashville Number System can be used for almost any genre. While it originated in country music, its approach to representing chord progressions works equally well for rock, pop, jazz, gospel, or blues. Any style that uses chord progressions can benefit from the flexibility and clarity the system provides.
Can beginners use the Nashville Number System effectively?
Yes, beginners can use the system to learn songs faster and improve their understanding of music theory and chord changes. By focusing on numbers rather than chord names, new players can develop the ability to transpose songs, recognize patterns, and jam with other musicians more easily. Using the first chord as a reference point in a song chart helps beginners get started quickly. Combined with practice, the system can quickly become second nature.
Expert Insight From: Donny Thurmon – Electric & Acoustic Guitar Expert
Donny has over a decade of experience in the music retail industry and a rich knowledge of both electric and acoustic guitars. His hands-on experience helps ensure our recommendations and insights are grounded in real-world expertise.



