Chord and FretC7alt on guitar
On the guitar, six strings give the chord room to breathe — some positions use them all, others ask you to mute the lowest ones. In this C7alt voicing the bass is E and the shape sits at fret 1, ringing 2 open strings. Its hollow wooden body gives every chord a warm, natural ring that blooms and fades on its own.
Notes in C7alt: C – E – G# – Bb – D#Formula: 1 – 3 – #5 – b7 – #9In the formula, the numbers count steps of the major scale starting from the note that names the chord; "b" lowers a half step, "#" raises one — and a slash names the bass note.
Where to use it: The last dominant before the return home, above all in a minor key; the signature of jazz.
Every region of the neck hides more shapes of C7alt on guitar. In Chord and Fret, you check it note by note, playing any shape as an arpeggio; open every variation on the neck, grouped by bass note; and set a capo — the diagrams redraw above it. Start free. Unlock everything with Pro. Plays offline.
See the whole neck in Chord and Fret →Part of the Altered dominants family.