- Ain't Nobody's Business (Ft. Jonny Lang) prod. by Derek O'Brien & Freddy Fletcher
- Ain't Nobody's Business by Willie Nelson & Wynton Marsalis prod. by Delfeayo Marsalis
- Alabam prod. by Grady Martin
- Aladambama by Willie Nelson & Roger Miller prod. by Chips Moman & Roger Miller
- Alexander's Ragtime Band by Willie Nelson & Bobbie Nelson prod. by Buddy Cannon
- Alice In Hulaland by Merle Haggard & Willie Nelson prod. by Buddy Cannon
- A Little Unfair
- Alleys of Austin (2018) by Michael Martin Murphey (Ft. Lyle Lovett)
- All in the Name of Love prod. by Booker T. Jones
- All of Me prod. by Booker T. Jones
- All of Me (Live 2004) prod. by Rick Smith (Texas)
- All the Soft Places to Fall by Merle Haggard & Willie Nelson prod. by Chips Moman & Merle Haggard
- All the Things You Are prod. by Jimmy Bowen
- All the Things You Are (Instrumental)
- All Things Must Pass (Ft. Lukas Nelson) prod. by Steve Chadie
- All You Need Is Love by Aloe Blacc (Ft. Brandon Flowers, Chris Stapleton, Eric Church, John Fogerty, Juanes, Kris Kristofferson, Pat Monahan, Peter Frampton, The Roots, Sheryl Crow, Spoon, Steven Tyler & Tom Morello) prod. by Keith Wortman
- Always by Willie Nelson & Leon Russell prod. by Leon Russell
- Always by Willie Nelson & Bobbie Nelson prod. by Buddy Cannon
- Always Late (With Your Kisses)