Tristan chord

Tristan chord
Component intervals from root
	augmented second
	augmented sixth
	augmented fourth (tritone)
	root [F]
Forte no. / Complement
	4–27 / 8–27

The original Tristan chord is heard in the opening phrase of Richard Wagner's opera Tristan und Isolde as part of the leitmotif relating to Tristan. It is made up of the notes F, B, D♯, and G♯:

${ \override Score.TimeSignature #'stencil = ##f \new PianoStaff << \new Staff << \relative c' { \clef treble \key c \major \time 4/4 <dis gis>1 } >> \new Staff << \relative c { \clef bass \key c \major \time 4/4 <f b>1 } >> >> }$

More generally, the term refers to any chord that consists of the same intervals: augmented fourth, augmented sixth, and augmented ninth above a bass note.