Rachmaninov's Morceaux de Fantaisie, Op. 3

I've discovered that Rachmaninov must have really liked "Dies Irae."  I've found it in three of his works now.  Back in May, I found it in his Symphonic Dances, Op. 45, although I never looked it up in the notation.  Last night, I found it in his Rhapsody on a Theme of Paganini, Op. 43.  And then I found it in his Morceaux de Fantaisie, Op. 3 (it took me awhile to find it in the notation though).  In the second movement (Prélude in C sharp), it's in the 7th to 9th measures:

(notation found here)

He plays around with it more here than in the other two instances I've found, but it's still recognizable.

I'm sort of painfully out of my depth here, but it seems like he's taken "Dies Irae" and sort of inverted the notes and - after shortening the note values from the original - expanded his new note values in order to come up with the rhythmic motif that (with the exception of the Agitato section) he uses almost throughout the movement.

Rachmaninov's Rhapsody on a Theme of Paganini, Op. 43

I listened to a lot of Rachmaninov to-day, including his Rhapsody on a Theme of Paganini, Op. 43.  I noticed that he includes "Dies Irae" in Variation X and Variation XXIV.

(notation found here)

If my counting is correct, this is measure 26 of Variation X.  This phrase also appears an octave higher two measures earlier, but this one was easier to take a screen clipping of.

In Variation XXIV, it appears at measure 39, again, if my counting is correct.  (I had to take two screen clippings to show the whole phrase.)  Here, he also slows it down in note values and changes the E to an Eb.

Rachmaninoff's Symphonic Dances, Op. 45, No. 3

Along with making my way through my digital collection of music, I've been listening to the 22 LPs in Funk & Wagnalls' Family Library of Great Music.  To-day was the record of Rachmaninoff, which includes the Piano Concerto No. 2 in C minor, Vocalise, Op. 34, No. 14, and Symphonic Dances Op. 45, No. 2 & 3.

I noticed that at the very end of the No. 3 Symphonic Dance, Rachmaninoff quotes "Dies Irae" in his brass part.

It's sort of funny that I'm realizing this now, as listening to these records last year is what introduced me to the "Dies Irae" - it's also quoted in Berlioz's Symphony Fantastique, which is the 22nd LP in this collection.  Actually, I recognized it as part of Argent's "The Coming of Kohoutek," and enough looking led me to the "Dies Irae."