A really great recording as usual (running out of ways of saying this
). Scriabin's complex personality along with his experimental music makes it difficult to interpret. Koji Attwood has made a research of his Piano Sonatas which is linked from Scriabin's biography and the Piano Sonata page of Scriabin. If Scriabin is of interest for you, please read this. I quote a part of it concerning the 5:th:
"The 5th Sonata was composed in a feverish burst of creative activity immediately after the completion of his Symphonic Poem of Ecstasy. It echoes the orgiastic, prismatic, and highly perfumed sound-world Scriabin evoked in the Poem, and in fact, as an introduction to this sonata, Scriabin attached a portion from the text of the Poem of Ecstasy:
I summon you to life, secret yearnings!
You who have been drowned in the dark depths
Of the creative spirit, you timorous
Embryos of life, it is to you that I bring daring
Cast in a single movement mold, we find once again as in the 3rd and 4th Sonatas, the climax of the piece has the transmogrification of the languid theme re-cast with triumphant chordal accompaniment, here even more vehement than in either the 3rd or 4th sonatas. The similarity between the languid themes in all three sonatas is quite striking, most notably the spanning of a perfect fourth initially.
Harmonically the 3rd, 4th, and 5th sonatas show an almost seamless process, weakening the importance of the tonic chord as a tonal center as Scriabin relies more and more on the dominant ninth chord with a flattened 5th. Incomplete whole-tone scales are also becoming more and more frequently employed and the move away from traditional triadic harmony in favor of quartal harmony is well underway."
The recording is up on the site.