2: Pathological bumbler holds a record (5)
3: This is truncated, or the end's off (9)
4: Solo, the pilot rises? No way (3)
5: Crazy, angered, mad, (7)
6: Unbeliever attending robbery (7)
9: Uncharacteristically, Dickenson pens uplifting romantic ballad (5)
11: What this puzzle is (3)