What is the name of the famous music festival held in Austin, Texas that features indie and alternative acts?

The famous indie and alternative music festival held in Austin, Texas is called South by Southwest (SXSW). This annual event showcases the latest and greatest in music, film, and interactive media. The festival has been a staple of the Austin community since its inception in 1987, and has since grown to become one of the largest and most influential music festivals in the world.

SXSW's music festival features over 2,000 artists from around the world, spanning a wide range of genres, including indie, alternative, rock, hip hop, electronic, and more. The festival is known for showcasing up-and-coming artists as well as established acts, making it a great opportunity for music lovers to discover new talent. In addition to the music, the festival also hosts a variety of film screenings, keynote speakers, and other events.

If you're a fan of indie and alternative music, or just looking for a fun and exciting festival experience, South by Southwest is definitely worth checking out.