Nashville's mayor has signed a treaty joining the Tennessee capital with its sister city of Tamworth, Australia.    

Nashville Mayor Karl Dean and Tamworth Mayor Col Murray signed the treaty on Friday to coincide with the CMA Music Festival taking place in downtown Nashville.

Tamworth is known as the "Country Music Capital of Australia" and annually hosts the Tamworth Country Music Festival in January.  

Murray said many links developed between Tamworth and Nashville over the years through the affinity both cities have for country music.      

Tamworth is Nashville's seventh sister city. Others include Belfast, Northern Ireland; Caen, France; Edmonton, Canada; Magdeburg, Germany; Mendoza, Argentina; and Taiyuan, China.