Mixed choir Gusla was created as a part of the Community centre "Saglasie" in 1898 and since then has played an active part in the cultural life of the town of Yambol – beautiful city in Southestern Bulgaria, situated on the banks of peaceful and picturesque Tundzha river. It’s a modern city with an ancient history and rich cultural life. The repertoire of Gusla choir is diverse and includes songs from many different styles and periods. Gusla choir preforms on concerts in Bulgaria and abroad. It has many awards from several prestigious International choir competitions: III International Review of Sacred music in Mantua and Podggio Rusco, Italy; VI Choir festival of Orthodox music in Sliven, Bulgaria (2010), II International festival “Music and sea” in Paralia Katerini, Greece (2013), IX International choral festival “Harmonia” in Harmanli, Bulgaria (2015).The choir regularly participates in an annual festival "The days of music Golden Diana", organised by the Municipality of Yambol.

Since 1996 the conductor is Vasil Sheytanov. He finished his Master’s studies at State music academy Pancho Vladigerov in Sofia in the class of Prof. Samuil Vidas. He has specialized with the famous Bulgarian choir-master Prof. Vasil Arnaudov and with Prof. Clavdii Ptitsa from Moscow Conservatoire. Maestro Sheytanov is a Second prize laureate at the International competition May choir days in Varna, Bulgaria, in 1987 and a First prize laureate at the 27th International choir competition in Gorizia, Italy, in 1988.