This "burning" seems to have been for him a real physical sensation, a bodily condition induced by the adventure of the spirit. This is not unusual in mystical states, and possibly the cryptic notes made by Pascal record a similar experience.[57] He continued in this warmth for nine months, when suddenly he felt and heard the "canor," the "spiritual music," the "invisible melody" of heaven. Here is his description of his change from "burning love" to the state of "songful love." Whilst ... I sat in chapel, in the night, before supper, as I my psalms sung, as it were the sound of readers or rather singers about me I beheld. Whilst also, praying to heaven, with all desire I took heed, suddenly, in what manner I wot not, in me the sound of song I felt; and likeliest heavenly melody I took, with me dwelling in mind. Forsooth my thought continually to mirth of song was changed: and as it were the same that loving I had thought, and in prayers and psalms had said, the same in sound I showed, and so forth with [began] to sing that [which] before I had said, and from plenitude of inward sweetness I burst forth, privily indeed, alone before my Maker.[58] The sweetness of this inward spiritual song is beyond any sound that may be heard with bodily ears, even lovers can only catch snatches of it. "Worldly lovers soothly words or ditties of our song may know, for the words they read: but the tone and sweetness of that song they may not learn."[59] The final stage of "sweetness" seems really to include the other two, it is their completion and fruition. The first two, says Rolle, are gained by devotion, and out of them springs the third.[60] Rolle's description of it, of the all-pervading holy joy, rhythm, and melody, when the soul, "now become as it were a living pipe," is caught up into the music of the spheres, "and in the sight of God ... joying sounds,"[61] deserves to be placed beside what is perhaps the most magnificent passage in all mystical literature, where Plotinus tells us of the choral dance of the soul about her God.[62]