Related Information for John The Whistler John The Whistler is Umberto Carli, a Bubblegum Macho artist from Denmark. He is most well-known for his 2000 single "I'm In Love" which appeared on his debut album, It's Crazy (2001). John The Whistler is produced under the Edel Records label (Germany & Denmark). His song "I'm In Love" has also appeared on a number of dance compilation albums, including Absolute Hits 2000 and Absolute Kids 2.Like Holly Dolly, Crazy Frog, and Gummibear, a comp.. read more