Guggenmusik (also known as "Guggemoseg", "Guuggemusig" or "Chatzemusig") is a term widely used in the Alemannic region of Switzerland, Austria and southern Germany to designate both a Carnival marching band and the type of music it plays.

It is a strongly rhythmic music of distinctive style played with brass
instruments, pipes and drums. Although melodies remain clearly
recognizable, they are at times played "off-key", intentionally and
often quite skillfully. Driven by a dominant rhythm section, the music
sounds twisted and thrilling, very danceable and perfect for spontaneous
street concerts during the "wild days" of Carnival. Today there are
many types of Guggenmusik to inspire carnival celebrants. Bands usually
play well-known pop songs but also folk tunes and children's music.

Source: https://en.wikipedia.org/wiki/Guggenmusik