It might be the oldest rock’n’roll cliche in the book: that being in a band is akin to being married, in a relationship or part of a family. When bands break up, the word “divorce” gets thrown around pretty regularly to describe the circumstances (in fact, it’s the word John Lennon used when he left The Beatles in 1969). That unavoidable and often uncomfortable interpersonal dynamic may explain why not many well-known bands prominently feature actual family members. Sure, there are a few outliers: 88-year-old Willie Nelson has been backed by his sons Lukas and Micah for two decades, while then-teenager Wolfgang Van Halen more than capably assumed bass playing duties alongside his guitar-slinging dad Eddie and drummer Uncle Alex when Van Halen reunited with David Lee Roth in 2007. But for W...