Alegru has 2 De Heideroosjes concerts.

The Heideroosjes (pronounced; hi-duh-rose-yes, HR in short), is a punk band from Horst aan de Maas, the Netherlands. The band's lyrics are in Dutch, English, German and Limburgs (a dutch dialect spoken in the Dutch province of Limburg). The band, formed in 1989, consists of Marco Roelofs (vocals), Frank Kleuskens (guitar), Fred Houben (Bass) and Igor Hobus (percussion). The band's name means "the meadow flowers" and was chosen for its ironic contrast with the many punk band names that reflect dark, sexual, or violent themes.