In which Texas city has the annual music festival South by Southwest taken place since 1987?

South by Southwest, abbreviated as SXSW and colloquially referred to as South By, is an annual conglomeration of parallel film, interactive media, and music festivals and conferences organized jointly that take place in mid-March in Austin, Texas, United States. It began in 1987 and has continued to grow in both scope and size every year. In 2017, the conference lasted for 10 days with the interactive track lasting for five days, music for seven days, and film for nine days.

Austin is the capital city of the U.S. state of Texas, as well as the seat and largest city of Travis County, with portions extending into Hays and Williamson counties. Incorporated on December 27, 1839, it is the 11th-most populous city in the United States, the fourth-most-populous city in Texas, the second-most-populous state capital city after Phoenix, Arizona. Austin is the southernmost state capital in the contiguous United States.