Who Jef Martens is
Jef Martens, better known by his stage name Basto (stylized as Basto!), is a Belgian record producer, musician and DJ. He primarily produces electro house music, and he is signed to the ARS label. He has produced using various aliases such as Bitch Boys, Candyman, Dirty Bunch, DJ Basik, Felix Project, Jin Sonic, Kings of Porn, and Lazy Jay. He was also a member of the Belgian dance group Lasgo. Martens co-produced with the band in 2009 and 2010 on a number of singles. He is best known for producing Azealia Banks' hit debut single "212" under the alias of Lazy Jay, together with his brother Toon. He also produced "Scream & Shout" for will.i.am and Britney Spears in 2012.
Biography from the Jef Martens article on Wikipedia, available under CC BY-SA 4.0.
Most played tracks
The tracks Spotify surfaces first for Jef Martens, with its own 0–100 popularity score alongside.
Latest releases
20 recent albums and singles. Cover art links through to Spotify.
Listener trend
The trend line fills in as weekly snapshots accumulate.
Scene ranks
Around them in the chart
Artists to compare
Acts at a similar level in house, and the biggest names from Belgium.
Jef Martens in numbers
How many monthly Spotify listeners does Jef Martens have?
Jef Martens has 258,900 monthly Spotify listeners in the week of Aug 17, 2026, as published on their public Spotify artist page.
What is Jef Martens's world ranking?
Jef Martens is ranked #729 of 1214 electronic music artists in the DJ INDEX, which ranks purely by monthly Spotify listeners.
Where is Jef Martens from?
Jef Martens is from Belgium, where they rank #23 among the acts we track.
What kind of music does Jef Martens make?
Jef Martens is categorised as House in the DJ INDEX.
Snapshot from the week of Aug 17, 2026. Listener figures come from Spotify's own public artist page and are rounded.