'Treasure chest at the end of the rainbow' is a trio band formed by former members of Actarus in May 2004 in Esch/Alz. (Luxemburg). Our music style can be described as a kind of indie/math rock. 'Treasure chest at the end of the rainbow' is a trio band formed by former members of Actarus in May 2004 in Esch/Alz. (Luxemburg). Our music style can be described as a kind of indie/math rock.