Complex sentence: Presley returned to the United States on March 2,1960; the first session was held on March 20--21 and the second session was held on April 3--4, completing the album.
Split into simpler sentences: Presley returned to the United States on March 2,1960. The first session was held on March 20--21 and the second session was held on April 3--4, completing the album.