His best known songs are Kronenburg Park (Ga die Wereld Uit), about a sex worker; Zwart Wit, about the racially motivated murder of Kerwin Duinmeijer in Amsterdam; and Twee gezichten about someone with a split personality.

In 1979 Boeijen released his first album, a joint effort with Wout Pennings produced by singer Rob de Nijs; Henk Wanders (drums) and Nels Busch (bass) were recruited as backing musicians.

In 1981 FBG released their self-titled debut album to critical acclaim; OOR magazine was impressed by Boeijen's Herman van Veen-type voice.

Second single was Kronenburg Park on which Boeijen revisited the prostitute subject; R&B girl group Mai Tai supplied backing vocals and released their own version twenty years later.

Kronenburg Park (inspired by the Kronenburgerpark) was also released in English as Round Midnight with lyrics by Golden Earring frontman Barry Hay ("You've always been the mistress of bad luck, making love for another lousy buck").