What is the minor tenth interval?
The minor tenth is the compound form of the minor third, projecting that interval's characteristic sadness and warmth across a wider span. When two notes a minor third apart are voiced close together in a low register, the result can sound muddy and indistinct. Spread them an octave further apart as a minor tenth, and the same harmonic relationship gains clarity and beauty. This is why experienced arrangers and pianists prefer tenths over thirds in their left-hand voicings—the wider spacing lets each note breathe.
The interval spans ten letter names (hence "tenth") and encompasses fifteen semitones. Like all compound intervals, it shares the fundamental harmonic quality of its simple equivalent while offering a distinctly different aesthetic experience. The minor tenth retains the minor third's emotional depth but delivers it with an openness that suits both intimate solo piano and full orchestral textures.
Harmonic character
The minor tenth's wide spacing produces a rich, resonant sound that is consonant enough to serve as a stable harmonic foundation yet emotionally complex enough to convey depth and nuance. In the lower register, tenths avoid the acoustic beating that makes close-position thirds sound rough, which is why classical composers from Bach onward have favored tenths in bass-line counterpoint.
- Compound equivalent: minor third + octave
- Consonance: Consonant (imperfect)
- Common context: Open voicings, stride piano, counterpoint
- Genre associations: Classical, jazz, romantic piano
Where you'll hear it
Stride piano—the left-hand technique pioneered by Fats Waller and Art Tatum—relies heavily on tenths to outline harmony. The pianist's left hand alternates between bass notes and tenth-based chords, creating a full, orchestral sound from a single instrument. Classical guitar repertoire also features minor tenths prominently, since the instrument's tuning makes tenths natural and resonant across the strings.
In orchestral writing, minor tenths appear when a bass instrument (cello, bassoon) plays the root while a higher instrument (violin, oboe) sounds the minor third an octave above. This scoring technique creates a rich minor sonority with excellent clarity. Chopin's piano works frequently feature left-hand tenths that require large hand spans, contributing to the lush harmonic fullness that defines his style.
Practice ideas
Practice minor tenths by playing a minor third and then moving the lower note down an octave. On piano, tenths require a hand span that challenges many players—practice arpeggiated tenths if you cannot reach them simultaneously. Compare the minor tenth with the major tenth to hear how the major/minor distinction carries across compound intervals. Practice Alberti bass patterns using tenths to develop both your reach and your ear for these wide, open voicings.