From oilyFoot65.

its like that one scene from minster vs aliens where blob is showing off the green jello

song is hungarian dance no 5 by johannes brahms

but more specifically pacifically

"Ungarischer Tanz Nr. 5 g-moll" by Johannes Brahms
Performed by the Fulda Symphonic Orchestra, conducted by Simon Schindler.
Recording is licensed under the EFF Open Audio License v1.
Source: Wikimedia Commons

see

no copyright woohoo