I have been searching the Irmologion of Ioannis the Protopsaltis for the quick melody for the irmos Τὴν ἀνεξιχνίαστον θείαν βουλήν. Can anyone help me find it?
Unfortunately, the Heirmologion of Ioannis Protopsaltis does not contain the music for this heirmos (nor does the 1825 Heirmologion of Petros Byzantios transcribed by Chourmouzios). In fact, I couldn't find a decent classical setting of this heirmos anywhere I looked (though I found a few modern settings elsewhere on this forum), so I wrote out my own setting. I have attached it to this post.