Move and arrange whole progressions

Why transposition needs more than adding semitones

Moving a progression to a new key is not just shifting every root by the same number of semitones: the destination key's own accidental preference (sharps or flats) determines how each new root and bass note should actually be spelled, and a slash-bass note has to move by the same chromatic distance as its chord. The Progression Transposer anchors this category, parsing a typed chord sequence and producing a respelled result in the destination key rather than a semitone-shifted approximation.

Tools in this category

• Progression Transposer

  Move a chord progression to another key while preserving its structure.

• Roman Numeral Analyzer

  Label a progression with Roman numerals and applied-dominant alternatives.

• Progression Analyzer

  Summarize a progression’s functions, cadences, and chromatic events.

• Nashville Number Converter

  Convert a progression to or from Nashville-style degree notation.

• Capo Finder

  Find capo positions and familiar open shapes for a sounding key.

• Modulation Planner

  Compare explainable routes between a source and destination key.

• Lead Sheet Formatter

  Format chords and lyrics locally into a compact rehearsal layout.

• Instrument Transposition Converter

  Convert written and concert pitches for a declared transposing instrument.

• Vocal Range Transposer

  Find key transpositions that fit a melody inside a comfortable vocal range.

• Melody Harmonization Explorer

  Compare diatonic chord candidates compatible with a melody note.

• Cadence Variation Generator

  Generate bounded ending alternatives for a stated tonal goal.

• Harmonic Rhythm Planner

  Allocate chord changes across bars and beats under explicit constraints.

• Progression Playback Lab

  Hear an entered, parsed progression with editable tempo, meter, and loop behavior.

• Progression Practice Loop Builder

  Create a tempo-ramped local practice loop for a parsed progression.