Austin’s biggest charity event Mack, Jack & McConaughey (MJ&M) — the joint fundraising effort of Academy Award-winning actor Matthew McConaughey, ACM Award-winning recording artist Jack Ingram, and ESPN analyst and Texas coaching legend Mack Brown — is returning April 12 and 13 for two nights of can’t miss concerts, including a headlining performance by the Dixie Chicks on Thursday, April 12. Tickets are on sale now!