Complex sentence: In support of their release, the band toured nationally with artists Secondhand Serenade, Making April, Innerpartysystem, The Medic Droid, and Kill Hannah; as well as this they are currently serving as the opening act for Lady GaGa's The Fame Ball Tour.
Split into simpler sentences: In support of their release, the band toured nationally with artists Secondhand Serenade, Making April, Innerpartysystem, The Medic Droid, and Kill Hannah. And are currently serving as the opening act for Lady GaGa's The Fame Ball Tour.