play a C major chord (one bar), an F major chord (one bar), a C major chord (one bar), and a G major chord (one bar). Here is an example of how two four-bar phrases can be formed to create a section of a song. Accidentals modifying a scale degree are usually written to the left of the number. 7 ("flat 7") represents a B major chord in the key of C, or an A major chord in the key of B or an F major chord in the key of G. Chord type A number by itself (without any other notation) is assumed to represent a major chord. Minor chords are noted with a dash after the number or a lowercase m; in the key of D, 1 is D major, and 1- or 1m would be D minor. If a chord root is not in the scale, the symbols or can be added. In the key of C major, an E triad would be notated as 3. In the key of A major, an F major triad would be notated as 6. Other chord qualities such as major sevenths, suspended chords, and dominant sevenths use familiar symbols: 47 5sus 57 1 would stand for F7 Gsus G7 C in the key of C, or E7 Fsus F7 B in the key of B. A2 means "add 2" or "add 9". Chord inversions and chords with other altered bass notes are notated analogously to regular slash chord notation. In the key of C, C/E (C major first inversion, with E bass) is written as 1/3; G/B is written as 5/7; Am/G (an inversion of Am7) is written as 6m/5; F/G (F major with G bass) is 4/5. Just as with simple chords, the numbers refer to scale degrees; specifically, the scale degree number used for the bass note is that of the note's position in the tonic's scale (as opposed to, for example, that of its position in the scale of the chord being played). In the key of B, 1/3 stands for B/D, 5/7 stands for F/A, 6m/5 stands for Gm/F, and 4/5 stands for E/F. Chord qualities - = m = minor = dominant 7th Δ = major 7th - (it takes four characters to write "maj7" as opposed to one, "Δ") ° = diminished ° = diminished seventh ø = ø = half diminished seventh °