Hi naturlaut,
"Midsummer Nights", of course, is a wonderful piano transcription by Earl Wild of Rachmaninoff's original song of the same title, Op. 14, No. 5, published in 1894 for soprano or tenor voice with piano accompaniment and inspired by the poet Daniel Rathaus. Rachmaninoff himself had transcribed only three of his songs to the best of my knowledge, "Daisies", "Lilacs", and "Vocalise". (He probably wanted to do more, but never found the time due to his commitments to composing and performing.) We're very fortunate that Earl Wild has since transcribed so many more of these beautiful songs, as has Arcadi Volodos more recently. It very surprising that so many pianists have never even heard any of Rachmaninoffs songs, 71 in total I believe, probably the most lyrical part of his ouvre. I've played the piano accompaniment for "Midsummer Nights", but not the piano transcription yet.
You play this late romantic music very well with much expression--it's very thoughtful and beautiful indeed. I thoroughly enjoyed listening. It's wonderful that you've selected this little-known but gorgeous work to share with us here. Thanks for posting it!