Related Information for Transatlantic Transatlantic is a progressive rock supergroup founded in 1999 by Neal Morse of Spock's Beard and Mike Portnoy of The Winery Dogs and Liquid Tension Experiment and formerly of Dream Theater. Other members include progressive rock veterans Roine Stolt (The Flower Kings) and Pete Trewavas (Marillion).Daniel Gildenlöw (Pain of Salvation) provided backing vocals and played guitar and keyboard during the 2001 tour.After releasing two highly acclaimed studio albums and two live recordings.. read more