Original sentence: Amos had sold 12 million records worldwide as of 2005 and has also enjoyed a large cult following.Amos was at the forefront of a number of female singer-songwriters in the early 1990s and was noteworthy early in her career as one of the few alternative rock performers to use a piano as her primary instrument
Edited sentence: Amos had sold 12+ million records worldwide as of 2005 and has also enjoyed a large cult following.Amos is the pioneer for a number of female singer-songwriters starting in the early 1990s and is noteworthy as one of the first alternative rock performers to use a piano as their primary instrument