F#13

— About this chord

F#13 (1–3–♭7–13, with 5 and 9 implied) is the richest dominant color in the jazz and blues vocabulary, stacking a bright 13th over the dominant 7th for a lush, horn-section-like shimmer. Common in jazz turnarounds, funk vamps, and blues shuffles, it substitutes freely for a plain F#7 wherever extra sophistication is wanted. On guitar it favors compact shell voicings with the root on the A string and the 13th ringing a half-step below the octave, sliding easily between open and upper-neck positions. Functionally it remains a strong V chord, pulling powerfully toward B while adding a horn-arranger sheen to comping. Also searched as F#dom13, Gb13, or G♭13.