The title track off Bob Seger’s latest album ‘I Knew You When’ is dedicated to his late friend Glenn Frey of the Eagles. I Knew You When was released last year and the expanded edition included “Glenn Song,” below, a direct tribute to Frey, marking how they’d grown up together in the Detroit music scene of the ‘60s. “”I knew him for 50 years,” Seger told Billboard soon after Frey’s death in 2016. “He was a great kid. I always kind of thought of him as my baby brother, a little bit.