Witness, Inc was formed by Kenny Shields and some high school friends in Saskatoon 1967, gathering a reputation as a live act and releasing a number of singles such as Not You Girl:
In late 1969 Shields was in a serious car accident and required surgery and therapy - the band continued without him without much success. Kenny's recovery took until 1975 - he reformed Witness Inc. briefly but soon left to form Streetheart in 1976.
There is a nice CD release collecting up their singles.