Bob Seger celebrates a milestone today — his 75th birthday. Born in Detroit on May 6th, 1945, he broke onto the national scene in 1968 with “Ramblin’ Gamblin’ Man,” and then launched a half-dozen years as a singles-chart mainstay with “Night Moves” in 1976.He has sold over 53 million albums and earned 13 platinum and seven multi-platinum discs. A Grammy winner, Seger is a member of both the Rock & Roll and Songwriters Hall of Fame, Seger completed his final tour last year, but is open to doing more shows — just not long tours. Seger married his third wife, Juanita, and they have two children — Samantha and Cole. He’ll be blowing out the candles at home in Michigan.