Question: Maurizio Lobina created the piano riff for which hit song that was released on 15 January 1999?
Sentence (from "Blue (Da Ba Dee)"): The song is the group's most popular single, reaching number one in many countries such as Ireland, the United Kingdom, the Netherlands, France, Sweden, Switzerland, New Zealand, Finland, Norway, Australia, and Germany, as well as reaching number six on the "Billboard" Hot 100 in the United States.
Relevant evidence: No