A Altered Dominant (A7alt) — Complete Guitar Chord Guide Overview A Altered Dominant is a altered chord built on the root A. The notes are A, C#, Eb, G, Bb, C, D#, following the formula 1 - 3 - b5 - b7 - b9 - #9 - #11. This chord is essential for guitarists exploring Modern Jazz, Fusion music and appears in countless songs across multiple genres. The Altered Dominant quality gives it a distinctive harmonic character that provides sophisticated color. Music Theory The A Altered Dominant chord uses the interval formula 1 - 3 - b5 - b7 - b9 - #9 - #11, producing the Root (1), Major Third (3), Tritone (b5/#4), Minor Seventh (b7), Minor Ninth (b9), Sharp Ninth (#9), Sharp Eleventh (#11). The notes A, C#, Eb, G, Bb, C, D# define its unique sonic footprint. Constructing this chord begins with the A major scale (A B C# D E F# G#). Stacking thirds beyond the seventh adds upper tensions. Playing Tips For advanced level players, A7alt requires advanced finger positioning and voice-leading awareness. Explore inversions, extensions, and substitutions to fully exploit the chords harmonic potential. Musical Applications A Altered Dominant is most commonly found in Modern Jazz, Fusion, Bebop music. Typical uses include adding sophisticated harmonic color in jazz, fusion, and contemporary contexts. Common chord progressions include . Practice Recommendations Start with 5-minute sessions focusing on clean articulation of each note. Gradually increase to 10-minute transition drills with a metronome, then 20-minute arpeggio and rhythm variation practice. At 30 minutes, apply the chord to full progressions at increasing tempos. Record your practice to identify areas for improvement.