X Caliber (1995)

Liveopnamen van Wolter Wierbos uit 1995. "As a member of the ICP Orchestra and Franz Koglmann's Piptet, he has displayed his penchant for the extremes of both arranged lyricism and free improvisation. As a result of his expertise and vision, X Caliber is a fascinating record in many respects, not the least of which are the fairly pedestrian concerns that so many tonal and timbral variations could be extracted from the trombone -- and with such musicality. Granted, this isn't everybody's shot of whiskey, but if you're reading this, you must have at least a passing interest in Wierbos as a soloist." (Allmusic)