On October 30, 2025, it was time again. A tradition of the Mathematics Department, which had last taken place in 2018 and had unfortunately fallen dormant during the coronavirus pandemic, was now revived.
Organized by Carolin Dörfer and moderated by Moritz Gösling, members of the Mathematics Department showcased their talents on the piano, vocals, guitar, and even the harp.
The event kicked off with a movement from Haydn's Piano Sonata in D major. Despite a focus on classical and romantic music, fans of other genres also got their money's worth, such as a reinterpretation of the pop song “Eine neue Liebe ist wie ein neues Leben” (A new love is like a new life) by Jürgen Marcus, as “Ana III jetzt erst recht” (Ana III now more than ever) by students of Analysis 3. In addition to Carolin Dörfer's performance of Chopin's Fantaisie Impromptu Op. 66 on the piano, two of Clara Schumann's Six Songs Op. 13, sung by Max Kehrer and accompanied by Christian Döhring on the piano, were also interesting. The program concluded with what was probably the most unusual piece of the evening, “Ol'Atonal Music” for voice and guitar by Merle Hazard, which, as the name suggests, is atonal music, i.e., music without a key, and also deals with this in its content.
After that, however, the audience was invited to participate musically, as the melody of “O Tannenbaum” was used to calculate the fundamental group of a cell complex with the help of lyrics that various members of the department had written (and changed at short notice).
