I have a question for music theory asking me about what I notice about the rhythm in bars 3-6 and the note pattern is the same : crotchet, 4 quavers, crotchet, minim. But the actual name of the note varies (e.g the first note in bar 3 is an A but in bar 4 it is a G and every note is different like this). There is a particular term for this but I really can't remember it. Any suggestions?
If the melodic contour is similar, either exactly transposed or adjusted to retain the shape but remain diatonic in the prevailing key, it's a sequence. If the contour of the melody changes, it's a rhythmic mode.
Edit: Now that I see the example, ms.3-6 form a (mainly) diatonic melodic sequence in D minor. I say "mainly", because you get the usual sharping of the leading tone in m.6.