En rythme molossique (In molossian rhythm) is the second of the Études in the minor keys, Op.
39 for solo piano by the French composer Charles-Valentin Alkan, published in 1846.
Ronald Smith compares the theme to the octaves in canon of the minuet from Joseph Haydn's string quartet, Op.
Finally, the flowing semiquavers of the second episode reappear once more in the coda in D major, with the rhythm being repeated over and over again in the bass, and the work ends, referencing Beethoven's "Tempest" sonata, also in D minor.
39 set, 'the dour, harsh, heavy brutality of the rhythm is magnificently expressed.