Complex sentence: The song is frequently preformed by The von Trapps, the real life great-grandchildren of the Captain and Maria, and appears on their album, "Dream a Little Dream", released on March 4,2014.
Split into simpler sentences: The song is frequently preformed by The von Trapps, the real life great-grandchildren of the Captain and Maria. It is set to appear on their upcoming album, "Dream a Little", to be released on March 4,2014.