A few months ago, I composed two riddle canons, each for a specific dedicatee (whose names will not be disclosed). Since I haven't publicised them that much, I thought now would be the appropriate time to do so.
So, without further ado:
Canon 1: Soggetto with inversion
The first voice presents the soggetto (theme), whilst the second voice presents the inverted form of the soggetto, beginning at the segno.
Realisation:
http://vielle.ws/downloads/1%20Canon.MID
Canon 2: Canon duplex a 4 voci
This canon is comprised of two sub-canons: the first one presents a soggetto in its first voice with its retrograde in the second voice; the second one presents an motif, retrograded in its second voice.
Realisation:
http://vielle.ws/downloads/2%20Canon.MID
I shall post PDFs of the realisation soon.