Karl Van Deun works since the eighties as composer / guitar, banjo and bas player in different formations and genre from jazz to folk music, bluegrass, western, swing, country, bigband, fingerpicking, .... He was on stage, making music with musicians like Mal Waldron, Erwin Vann, Pierre Vandormael, Michel Hatzigeorgiou, Kurt Van Herck, Dre Pallemaerts, Philip Catherine, and many others. Due to hearing problems (hyperacusis) Karl stepped back but kept on composing and playing.

In 2006 Kurt Van Herck trio dedicated the cd "Le Mariage" to himn, with some of his compositions.

Ask Me - Don't Ask is the first full album that Karl Van Deun not only has composed, but in which he also plays al the tracks himself in duo with young musician and master student Ruben Machtelinckx. All compositions on the album are representative of all the different styles and periods of Karls rich lifework.