In no particular order.
John Moreland - White Flag
Whitey Morgan - Still Drunk, Still Crazy, Still Blue
Kendrick Lamar - King Kunta
The Honeycutters - Me Oh My
Randy Rogers and Wade Bowen - El Dorado
Benton Leachman - Lonely
Darrell Scott - Thanksgiving 1985
Father John Misty - The Night Josh Tillman Came to Our Apt.
Chris Stapleton - Fire Away
These and many other good songs from 2015 are included on this Spotify playlist: