Complex sentence: The old studio, listed on the National Register of Historic Places since June 2006, was partly restored in the early 2000s and was sold to the Muscle Shoals Music Foundation in 2013.
Split into simpler sentences: The old studio has been listed on the National Register of Historic Places since June 2006. It was partly restored in the early 2000s and was sold to the Muscle Shoals Music Foundation in 2013.