surabaya, November 15, 2019. sman 15 surabaya has held a concert. the annual concert was named Liberty. this time the event invited very popular guest stars from the past to the present. The guestis a reality club, kahitna, and didi kempot.

This year's event is the most lively event of the previous year's event because many are waiting for guest stars who are now very popular and familiar. from the beginning of the event to the end of the event, always full of spectators.

At the beginning of the event there was an Surabaya 15 Surabaya extracurricular performance, then there was a speech and finally there was a guest star who had been waiting for by the audience.