Birthday Piece inspired by 'Stefan Hagel' Motif

Leck mir den Arsch, fein recht schön,
fein sauber lecke ihn,
fein sauber lecke, leck mir den Arsch.
Das ist ein fettiges Begehren,
nur gut mit Butter geschmiert,
denn das Lecken der Braten mein tägliches Tun.
Drei lecken mehr als Zweie,
nur her, machet die Prob'
und leckt, leckt, leckt.
Jeder leckt sein Arsch für sich.
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Happy Birthday Stefan Hagel!
I was thinking about a decent birthday gift for quite a long time, and my eureka moment arrives when recalling that Dmitri Schostakowitsch had once created the famous 'DSCH' (D-Eb- C-B) motif on his initial; and obviously, Dr. Stefan Hagel, a leading expert on the study of Ancient Greek music, certainly deserves a unique motif by that manner, i.e. 'SHAG' (Eb-B-A-G). When calling out Alypius from coffin, this motif can be viewed as trite hyperbolaion, paranete diezeugmenon, paramese and mese of a hypophrygian chromatic tonos (ΘΠΨΦ/VↃCF), so it kinds of make Hellenic sense as well.
Then, driven by the stereotype that all Austrians must love schnitzel (劃掉) Mozart, I tried to search through and get a stunning finding, in Mozart's K.233/382d, the starting four notes (Bb-F-D-C) can be easily transposed and distorted to our SHAG motif, and it's lyrics, „Leck mir den Arsch...“ perfectly fits. So I eventually tried to write down this little piece by adopting Mozart's talented phrases. I hope this typical Austrian salute will bring Dr. Hagel a pleasant and unforgettable birthday.
Lastly, I sincerely appreciate Leyou Wang for his kind help on piano arrangement, performance, and of course, si難過ing.<比如>