Lange Frans & Baas B, a Dutch hip hop duo consisting of Lange Frans (alias of Frans Frederiks) and Baas B (alias of Bart Zeilstra), both from Diemen, North Holland, formed in 1997. Their musical journey began with a freestyle session on a basketball court, leading to the creation of the hiphop collective D-Men alongside Brutus, Lange Frans' brother. In 2004, Lange Frans & Baas B started releasing singles as a duo, achieving significant success with "Moppie" (2004) and "Zinloos" (2004), the latter of which reached Number 1 in the Dutch charts. Their debut album Supervisie was also released in 2004, followed by Het land van in 2005. In 2008, they released their third album Verder, but it failed to achieve commercial success. The duo announced their split on March 27, 2009, performing "Dit was het land van" as their final song on the Dutch version of X-Factor.