Mouth full of birds Van Ingelgem, Maarten Compulsory work IKV 2017. Upstream Van Ingelgem, Maarten Compulsory work IKV 2017. Anchorite Van Ingelgem, Maarten Compulsory work IKV 2017. How oft, when thou my music Slootmaekers, Martin Compulsory work IKV 2013.