This sound is a field recording taken a public transport bus, on the "Huipulco - Six Flags" bus line, in Ajusco, Mexico City. The recording features a clown who boarded the bus and gave a performance for its passengers. Also audible is a traditional Mexican song, featuring instruments and vocals, played by the bus driver on the bus's speaker. 

Noises from the transport and passengers can be heard at various points, including the driver honking at another bus, brakes squeaking, and the bus doors opening to pick up more passengers. The entire performance lasted about 5 minutes, but the recording captures 1 minute and 46 seconds. 

Recorded in Tlalpan, Mexico by Claire Babbott-Bryan.