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Mode · Reference entry

G Ionian Mode

Ionian mode · G – A – B – C – D – E – F♯ – G · intervals P1-M2-M3-P4-P5-M6-M7-P8

The G Ionian Mode contains the notes G, A, B, C, D, E, and F♯. Its step pattern is W-W-H-W-W-W-H. The bright, resolved sound of the major scale — the home base of Western tonal music.

Also known asG Major Scale →

At the keyboard

G · A · B · C · D · E · F#
Maintained by Justin Evans, a pianist of 25 years
Maintained for accuracy · Last updated July 2026 · How we review
Flashcards · Scale
Three questions on G Ionian Mode
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The G Major scale contains seven notes: G, A, B, C, D, E, and F♯. It follows the whole-step / half-step pattern W-W-H-W-W-W-H.

The G Major scale is the most common second scale taught after C Major. Its notes — G, A, B, C, D, E, F♯, and G — use the same white-key pattern as C Major with one important change: the seventh note is F♯, not F natural. That single sharp makes G Major the first key signature most pianists learn to read on the staff, and the F♯ also gives the scale its bright, distinctive "leading tone" that pulls strongly back to G.

G Major sits one step clockwise from C on the circle of fifths, which is why it shares six notes with C and only changes one. Its relative minor is E Minor (same key signature, different home note), and its parallel minor is G Minor. The diatonic chords in G — G, Am, Bm, C, D, Em, F♯° — power some of the most-played songs in folk, country, classical, and rock. G Major is also a favorite key for guitar, which means a huge amount of the popular-music repertoire is written in it.

The right-hand fingering is the standard 1-2-3-1-2-3-4-5 pattern, identical to C Major. The thumb tucks under between B and C, and the F♯ falls naturally under finger 4. It feels almost the same as C — the only adjustment is keeping finger 4 ready for a black key on the way up.

G Ionian Mode Notes

DegreeNameNoteInterval
1TonicGP1
2SupertonicAM2
3MediantBM3
4SubdominantCP4
5DominantDP5
6SubmediantEM6
7Leading ToneF♯M7
8OctaveGP8

How to Play the G Ionian Mode

Practice the G Ionian Mode hands separately at a slow, steady tempo before putting them together. Aim for even rhythm and a relaxed wrist — the goal is a smooth, connected line where every note sounds the same length and volume. Once both hands feel comfortable on their own, layer them at the same slow tempo and only speed up when the joined version is clean.

Right Hand (RH)

Place your right hand over the keys with the thumb on the root. Use the fingering: 1-2-3-1-2-3-4-5 — 1 = thumb, 2 = index, 3 = middle, 4 = ring, 5 = pinky.

Watch for the thumb tuck: the thumb (1) passes under your fingers at note 4. Keep your wrist level and quiet — only the thumb moves under, the hand stays in place above the keys.

Left Hand (LH)

For the left hand, start with your pinky on the root. Use the fingering: 5-4-3-2-1-3-2-1

Watch for the crossover: a long finger (3 or 4) crosses over the thumb at note 6. Lift the long finger over cleanly without disturbing the thumb. Descending the scale, the thumb will pass under at the same spots in reverse.

Practice routine

  1. One octave, ascending only, right hand alone — slow and even.
  2. One octave, ascending and descending, right hand alone.
  3. Repeat steps 1–2 with the left hand alone.
  4. Hands together, ascending and descending, at the same slow tempo.
  5. Two octaves hands together once step 4 feels comfortable.
  6. Increase the tempo only when the previous tempo is fully clean.

Key Signature

The G Ionian Mode draws its notes from G Major, so it is written with that key signature: 1 sharp (F♯).

F♯

Order of sharps

Sharps are added to a key signature in a fixed order. Each new sharp key adds the next sharp on the list.

F♯C♯G♯D♯A♯E♯B♯

Mnemonic: Father Charles Goes Down And Ends Battle

Diatonic Chords in the G Ionian Mode

These are the triads built on each degree of the G Ionian Mode:

C1C2C3C4GBC5DC6C7C8
I — G Major (major)
DegreeNumeralChordQuality
1IG MajorMajor
2iiA MinorMinor
3iiiB MinorMinor
4IVC MajorMajor
5VD MajorMajor
6viE MinorMinor
7vii°F♯ DiminishedDiminished

How Ionian Relates to the Major Scale

C1C2C3CDEGABCDEGABC6C7C8F#F#
Mode
Key

G Ionian uses the same notes as G Major

Relative modes — all share the same notes
G Ionian=A Dorian=B Phrygian=C Lydian=D Mixolydian=E Aeolian=F♯ Locrian

Common Tones

Common tones are the notes that two scales or modes share. Knowing which notes the G mode shares with its parallel modes (same root, different scale) helps with improvisation, modal interchange, and smooth voice leading. The more notes two modes share, the more closely related they sound — and the easier it is to slide between them in a solo or progression.

Parallel ModeCommon NotesShared / 7
G DorianC – A – B – F♯ – G5 / 7
G PhrygianC – A – B – F♯ – G5 / 7
G LydianC – A – B – F♯ – G5 / 7
G MixolydianC – A – B – F♯ – G5 / 7
G AeolianC – A – B – F♯ – G5 / 7
G LocrianC – A – B – F♯ – G5 / 7

G Ionian Mode — Frequently Asked Questions

What notes are in the G Major scale?
The G Major scale has seven unique notes plus the octave: G – A – B – C – D – E – F♯ – G. Six are white keys; the seventh, F♯, is the black key directly above F. That F♯ is what makes G Major sound bright and resolved instead of unstable.
How many sharps does G Major have?
G Major has one sharp: F♯. It is the first key on the sharp side of the circle of fifths. Every time you see an F in a piece written in G Major, play it as F♯.
What is the fingering for the G Major scale?
Right hand: 1-2-3-1-2-3-4-5 ascending, reverse descending — same fingering as C Major. The thumb tucks under finger 3 between B and C, and F♯ falls under finger 4. Left hand: 5-4-3-2-1-3-2-1, with finger 3 crossing over the thumb between A and B.
What is the relative minor of G Major?
The relative minor of G Major is E Minor. Both scales share the same key signature (one sharp, F♯) and the same seven notes — they just start in different places. Songs in E Minor look identical to G Major songs on the staff but feel darker because E (not G) acts as the home note.
What chords are in the key of G Major?
The seven diatonic chords in G Major are G (I), Am (ii), Bm (iii), C (IV), D (V), Em (vi), F♯° (vii°). The classic pop progression I–V–vi–IV in G is G → D → Em → C, used in everything from "Let It Be" to thousands of folk and country songs.
Why is G Major often the second scale beginners learn?
Two reasons: (1) it shares all but one note with C Major, so it is the smallest possible step into reading sharps; and (2) the standard 1-2-3-1-2-3-4-5 right-hand fingering from C Major works identically in G — only the F changes to F♯. That makes G Major the gentlest possible introduction to the concept of key signatures and accidentals.

Related Tools

Circle of FifthsVisualize key relationships, relative minors, and key signatures.Chord FinderLook up any chord — see the notes, hear it, and play along.Practice RoomPlug in a MIDI keyboard and get real-time feedback on every chord and scale.Chord DrillTimed drills to build speed and recognition across all chord types.MIDI MonitorLive MIDI message stream with note names, velocity, and a scrolling staff.
Entry reviewed and maintained by Justin Evans. Corrections are read and applied.Report an error

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