Complex sentence: In February 2011 Asuka Hoshino debuted as singer with the single "Cassiopea" and in April 2011 she appeared in a new gravure video, "Erotic Cute".
Split into simpler sentences: In February 2011 Asuka Hoshino debuted as singer with the single "Cassiopea". In April she appeared in a new gravure video, "Erotic Cute".