Complex sentence: Ochi stated that as she was writing the song, she imagined herself performing it live in Okinawa, but she also expressed her nervousness in how she will be performing it on the radio for all of Japan to hear.
Split into simpler sentences: Ochi stated that as she was writing the song, she imagined herself performing it live in Okinawa. She also expressed her nervousness in how she will be performing it on the radio for all of Japan to hear.