Juan Lopez, known as Johnny Fiasco, is a Chicago-born DJ and producer. Raised in the Pilsen neighborhood of Chicago, he began his musical career playing guitar in local rock and funk bands before shifting to home studio production and electronic music.
He began DJing at early underground house events in Chicago and held a residency at Smart Bar alongside Mark Farina. He later focused on production, releasing material on various labels, as well as personally operating Tonic Recordings.
His work spans house music production and remixing, with releases and remixes issued across a range of electronic music labels.