Around Austin-Crossroads Guitar Festival 2026-Saturday evening September 26th 2026 at the Moody Center. Above, this snapshot of Marcus King with the "bluegrass phenom Sierra Hull" and guitarist Drew Smithers. This trio was a highlight on Saturday, among their set was their rendition of the Eric Clapton classic "Bell Bottom Blues." Sierra's vocals and mandolin soared along with the amazing collaboration from Marcus King and Drew Smithers.