Here’s a great video clip of Paul Baloche explaining what he’s looking for in a bass player.
In this clip Paul focuses almost exclusively on the bass player’s skill. More important than the bass player’s skill, of course, would be his or her heart. Do they love the Lord? Are they passionate about God’s glory or their own? Are they humble? Are they committed to the church? if these answers are “yes”, and the bass player is skillful (like Paul talks about), then sign him (or her) up!