Seminal American roots music band The Nighthawks have announced that their founding leader, Mark Wenner, has undergone successful heartbypass surgery and is expected to make a complete recovery. Because of the operation, Mark will stay off the road for approximately six weeks while he recovers, and the band has postponed the affected dates. The Nighthawks are expected to resume touring the end of May or early June.Mark Wenner’s condition was diagnosed on Monday, April 9 when he went in for an angiogram/angioplasty and doctors discovered he needed the bypass operation, which was done the following day. Because they caught it early, the doctors feel very confident that his prognosis for a full recovery is excellent.The Nighthawks debut CD for Severn Records, Damn Good Time, is scheduled for release on May 15, and the band had already scheduled a number of shows around the country to support its release. Damn Good Time is the follow-up to The Nighthawks’ Last Train to Bluesville, which garnered the band its first-ever Blues Music Award from the Blues Foundation as Acoustic Blues Album of the Year in May 2011.Singer/harmonica player Mark Wenner is the founder of The Nighthawks, whose members also include guitarist Paul Bell, bassist Johnny Castle and drummer Mark Stutso. The new CD features a number of originals and cover songs ranging from blues and soul to rock and rhythm and blues.Fans can keep track of Mark Wenner’s recovery by vis.iting the band’s website at or their Facebook page, where they can also send him get-well wishes