Complex sentence: That same year she lost her singing voice and hasn't been able to sing since, due to an unknown reason, in an interview from 2013 she explained that I can't get vocal cord closure and achieve the proper pitch simultaneously.
Split into simpler sentences: That same year she lost her singing voice and hasn't been able to sing since, due to an unknown reason. In an interview from 2013 she explained that I can't get vocal cord closure and achieve the proper pitch simultaneously.