Crazy Cabellero - inspiration for transformation

Last week I finally found some time to check out some Disney animations. After seeing Dumbo for the first time at the age of 28, what made some eyebrows rise around me, I went for the The Three Caballeros (1945).
The animation itself is quite OK but what really caught my attention was trippy Mexican gift scene. In this scene Donald Duck and Joe Carioca unwrap a gift and it explodes in to a trippy musical scene that gets more fantastic and caleidoscopic when Donald gets suck into the colourful background.