Complex sentence: She was Jethro Tull leader Ian Anderson's first wife, from 1970 to 1974, and as "Jennie Anderson" she is credited with the lyric of the Jethro Tull song "Aqualung".
Split into simpler sentences: She was Jethro Tull leader Ian Anderson's first wife, from 1970 to 1974. As "Jennie Anderson" she is credited with the lyric of the Jethro Tull song "Aqualung".