Listen to 開かれた砲門 online. 開かれた砲門 is an Unknown language song and is sung by Super Robot Taisen Alpha -Original BGM-. 開かれた砲門, from the album スーパーロボット大戦α オリジナルスコア I ～天空の章～, was released in the year 2000. The duration of the song is 0:59. Download Unknown songs online from JioSaavn.