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Tea For Two in C#
This cabaret classic's relentless ii-V-I motion is a disciplined training ground for Dorian, Mixolydian, and Bebop Major language deployed in C#. The symmetrical phrase structure demands harmonic precision and motivic development in equal measure. The D#m7 – G#7 – C#maj7 – F#7 – Fm7 – A#7 – Gm7 – C7 – Fmaj7 – Am7 – D7 – Fm7b5 – A#7b9 – Fdim7 – F#maj7 – D#m7/Ab – B7 – Edim7 – C#6 changes are used by generations of jazz educators to build ii-V-I fluency and consistent swing.
Key of C#
C# major (or Db) sits in barre chord territory across the fretboard. Every chord demands precise barring, but the payoff is a bright, crystalline sound a half step above C that cuts through a band mix. C# is a intermediate-advanced-level key on guitar because no open strings fall within the key naturally, so every chord requires full barre technique. Expect to rely on barre chords throughout, which builds hand strength and unlocks the entire fretboard.
Voice Leading
The bass line moves through D# to G# (ascending perfect fourth), G# to C# (ascending perfect fourth), C# to F# (ascending perfect fourth), F# to F (descending half step), F to A# (ascending perfect fourth), A# to G (descending minor third), G to C (ascending perfect fourth), C to F (ascending perfect fourth), F to A (ascending major third), A to D (ascending perfect fourth), D to F (ascending minor third), F to A# (ascending perfect fourth), A# to F (descending perfect fourth), F to F# (ascending half step), F# to D# (descending minor third), D# to B (descending major third), B to E (ascending perfect fourth), E to C# (descending minor third). A half-step bass movement creates a strong leading-tone pull that demands resolution. The root motion by larger intervals (fourths and fifths) gives each chord change a strong, decisive character. When the progression loops, the bass returns from C# to D# by whole step.
Scales for Improvisation
C# major pentatonic works because every note is either a chord tone or a safe passing tone — there are no avoid notes. For soloing, this means you can play freely without clashing. Over dominant seventh chords, C# Mixolydian adds the flat seventh for an authentic blues-rock edge.