Question: Who gave an analysis of the piece in 1933?
About the article "Mona Lisa", section "Conservation".

Candidate passages:
In Nazi Germany, the state gave a number of honorary titles to certain German cities.
The following cities were given an honorary title during 1933-1939:  
Analysis is the effort to describe and explain music.
Analysis at once is a catch-all term describing the process of describing any portion of the music, as well as a specific field of formal analysis or the field of stylistic analysis.
Formal analysis attempts to answer questions of hierarchy and form, and stylistic analysis attempts to describe the style of the piece.
These two distinct sub-fields often coincide.
Analysis of harmonic structures is typically presented through a roman numeral analysis.
However, over the years, as music and the theory of music have both grown, a multitude of methods of analyzing music have presented themselves.
Two very popular methods, Schenkerian analysis and Neo-Riemannian analysis, have dominated much of the field.
Schenkerian analysis attempts to "reduce" music through layers of foreground, middleground, and, eventually and importantly, the background.
Neo-Riemannian (or Transformational) analysis began as an extension of Hugo Riemann's theories of music, and then expanding Riemann's concepts of pitch and transformation into a mathematically rich language of analysis.
While both theories originated as methods of analysis for tonal music, both have been extended to use in non-tonal music as well. 
The film premiered on December 26, 1933, in New York City, and throughout 1934 in the rest of the world.
"Queen Christina" turned out a success, gathering numerous positive reviews.
Critic Mordaunt Hall, writing for the "New York Times", gave the film a positive review and liked the screenplay, calling the dialogue "a bright and smooth piece of writing" and referred to Mamoulian's direction as "entrancing".
Positive opinions came also from "Modern Screen"'s Walter Ramsey, who proclaimed it a "triumph for Garbo", and a reviewer for "Photoplay", who acclaimed Garbo's "glorious reappearance".
However, a mixed review from "Variety" found the script "lethargic".
Contemporary critics gave "Queen Christina" positive reviews.
It has received a 100% "Fresh" rating at Rotten Tomatoes, based on twelve reviews.
The film grossed over $2,500,000, recording a profit of $632,000 and becoming one of Garbo’s most commercially successful films.
It was nominated for the Mussolini Cup award at the Venice Film Festival in 1934, but lost to "Man of Aran".
The part of Queen Christina is regarded as one of the best in Garbo's filmography.
and it is especially notable for its resoundingly disproving rumours that John Gilbert's lack of success in the sound era was due to an unsuitable voice. 
Poseidon is infinitely busy with the management of the waters.
What he actually calculated, whether tides, floods, certain water levels, we do not know and therefore can not judge whether it is meaningful work.
Poseidon appears as a grumpy official who quarrels with his work responsibilities, but ultimately can not solve them.
The small piece ends in an almost serene mood but bizarre because of the juxtaposition of "in a silent moment of world destruction". 
The principle of the mixture was the enveloping of each particle of the salts in an elastic jelly composed of hydrocarbons and nitrogen.
The jelly additionally supplied material to the explosion.
An 1887 analysis gave the following composition: