| A Hard Road to Travel | Union Springs | | | 2:24 | instrument |
| A Heart Needs a Break | Eli Young Band | | | 2:40 | instrument |
| A Heart Never Knows | The McCoury Brothers | | | 3:33 | instrument |
| A Heart That Will Never Break Again | Ginny Hawker | | | 3:53 | instrument |
| A Heart That's True | Luke Brindley | | | 3:33 | instrument |
| A Heymisher Bulgar (A Heymish Bulgar) / Mayne Elterns Fargenign (My Parents' Pleasure) | The Klezmer Conservatory Band | | | 5:08 | instrument |
| A Home | Dixie Chicks | | | 5:48 | instrument |
| A Home | Dixie Chicks | | 4 | 4:57 | instrument |
| A Honky Tonk Saturday Night | John Anderson | | 4 | 2:47 | instrument |
| A Horse Named Bill | Jerry Garcia & David Grisman | | | 3:05 | instrument |
| A Horse Named Bill | David Grisman & Jerry Garcia | | | 2:49 | instrument |
| A Hot Meal | Stephen Rippy | | 3 | 1:06 | instrument |
| A Hundred Years From Now | Roanoke | | | 2:48 | instrument |
| A Hundred Years From Now | Lester Flatt & Earl Scruggs | | | 2:09 | instrument |
| A Hundred Years From Now | Gene & Joe and Highland Grass | | | ?:?? | instrument |
| A Hundred Years From Now | Frank Wakefield and Red Allen | | | 3:21 | instrument |
| A Irmandade das Estrelas | Carlos Núñez | | | 4:12 | instrument |
| A Jealous Heart and a Worried Mind | Peter Rowan | | | 2:59 | instrument |
| À l'horizon que du bleu | Guigou Chenevier | | | 3:27 | instrument |
| À l’enterrement de ma grand-mère | Sanseverino | | | 2:47 | instrument |
| A la Lola lila | Primera Nota | | | 5:14 | instrument |
| A la luz de la hoguera | Felipe Campuzano | | | 3:42 | instrument |
| A la luz del cigarro | María Salgado | | | ?:?? | instrument |
| A Letter to My Heart | The Bear Bridge Band | | | 2:53 | instrument |
| A Letter to Tom | The Country Gentlemen | | | 3:29 | instrument |
| A Letter to Tom | The Country Gentlemen | | | 3:47 | instrument |
| A Life of Sorrow | David Grisman with The Nashville Bluegrass Band | | | 3:18 | instrument |
| A Life That’s Good | Lennon & Maisy | | | 3:22 | instrument |
| A Lion's Share | Faux Fawn | | | 3:05 | instrument |
| A Little at a Time | The Stanley Brothers | | | 2:27 | instrument |
| A Little at a Time | Charlie Sizemore | | | 2:20 | instrument |
| A Little Bit of Love | The Mahones | | | 4:25 | instrument |
| A Little Blues | The Be Good Tanyas | | | 2:42 | instrument |
| A Little Gift | Luke Brindley | | | 2:04 | instrument |
| A Little Heart's Ease | Mr Sun | | | 4:28 | instrument |
| A Little Left Over | The Travelers | | | 2:04 | instrument |
| A Little Love | Bryan Adams | | | 3:23 | instrument |
| A Little More More More | The BossHoss | | | 3:27 | instrument |
| A Little Night Dream | 木村真紀 | | | 3:51 | instrument |
| A Little Past Little Rock | Lee Ann Womack with Jason Sellers | | | 4:16 | instrument |
| A Little Past Little Rock | Cliff Waldron and the New Shades of Grass | | | 2:46 | instrument |
| A Little Talk With Jesus | Ernest Phipps & His Holiness Singers | | 5 | 2:50 | instrument |
| A Little Trust | Donna Ulisse | | | 2:54 | instrument |
| A Little Ways Down the Road | Cliff Waldron and the New Shades of Grass | | | 2:44 | instrument |
| A Little While | Shawn Lane | | | 3:14 | instrument |
| A Lonesome Highway | High Country | | | 2:33 | instrument |
| A Lonesome Night | Ralph Stanley feat. Patty Loveless & Vince Gill | | | 3:21 | instrument |
| A Lonesome Night | The Stanley Brothers & The Clinch Mountain Boys | | | 2:54 | instrument |
| A Lonesome Road | Bill Monroe | | | 2:40 | instrument |
| A Lonesome Road | Laurie Lewis | | | 4:23 | instrument |
| A Long Lonesome Time | Richard Bennett | | | 3:42 | instrument |
| A Long Way From Rosine | Bill Jones and The Bluegrass Travelers | | | ?:?? | instrument |
| A Long Way Home | Damian Wilson | | | 4:18 | instrument |
| A Love Like Springsteen | Kasey Chambers | | | 3:41 | instrument |
| A Love That Lives, is a Love That Never Dies | Matt Chaplin | | | 3:07 | instrument |
| A Man of Constant Sorrow | Sharon Shannon with Jackson Browne | | | 3:37 | instrument |
| A Man Who Likes to Dance | Mark Madden | | | 2:51 | instrument |
| A Man/Me/Then Jim | Rilo Kiley | | 3 | 5:25 | instrument |
| A Media Luz | Dave Apollon | | | 2:35 | instrument |
| A Memory of You | Cliff Waldron and the New Shades of Grass | | | 2:35 | instrument |
| A Memory of You | Jim and Jesse | | | 2:15 | instrument |
| A Memory of You | Danny Paisley & The Southern Grass | | | 2:52 | instrument |
| A Memory of You | Jim and Jesse | | | 2:25 | instrument |
| A Message for Peace | Emerson & Waldron | | | 3:02 | instrument |
| A Mhorbhairne Ghlas nan Tulaichean | Riona Whyte | | | 5:01 | instrument |
| A mi burro | La Carraca | | | ?:?? | instrument |
| A Mighty Pretty Waltz | Bill Monroe | | | 2:43 | instrument |
| A Mighty Wind | The Folksmen, Mitch & Mickey, & The New Main Street Singers | | 3 | 2:16 | instrument |
| A Million Hearts | Bettman & Halpin | | | 4:23 | instrument |
| A Million Miles | Heart | | | 5:05 | instrument |
| A Million Miles Away | Rory Gallagher | | | 7:13 | instrument |
| A Million Ukeleles | MJ Hibbett | | | 5:26 | instrument |
| A Mind With a Heart of Its Own | Tom Petty | | 3 | 3:31 | instrument |
| A Miner's Life | Solas | | | 4:55 | instrument |
| A Minor Breakdown | The Greenbriar Boys | | | 2:19 | instrument |
| A Moment in a Million Years | Scorpions | | | 3:39 | instrument |
| A Monster | Styx | | | 3:27 | instrument |
| A Moth to a Flame | Peter Rowan & The Nashville Bluegrass Band | | | 4:11 | instrument |
| A Mother's Parting Words to Her Daughter | Patent Pending | | | 3:53 | instrument |
| A Mother’s Last Words to Her Daughter | Dry Branch Fire Squad | | | 3:36 | instrument |
| A Mother’s Prayer | Shawn Lane | | | 3:30 | instrument |
| A Mountaineer is Always Free | Tim O’Brien, Kevin Burke, Kenny Malone, John Williams, Dirk Powell & John Doyle | | | 3:13 | instrument |
| A Murder of One | Counting Crows | | 4 | 5:44 | instrument |
| A Musical Apology | Susan Egan | | | 2:30 | instrument |
| A Nakht in Gan Eden | Klezmer Quartett Heidelberg | | | 1:22 | instrument |
| A Nedowe | Manfred Lemm & Ensemble | | | 2:54 | instrument (as “Barockmandoline”) |
| A New Day Has Come | Kasey Chambers | | | 5:22 | instrument |
| A New Set of Rules | The Lonesome Pine Fiddlers | | | 1:47 | instrument |
| A New Year's Carol/Sussex Carol/Tomorrow Will Be My Dancing Day | Al Petteway and Amy White | | | 5:00 | instrument |
| A Night to Remember | SHeDAISY | | | 4:44 | instrument |
| A Part of Growing Up (That Gets Me Down) | Rarely Herd | | | 2:54 | instrument |
| A Phantasmic Parade | Epica | | | 4:36 | instrument |
| A Phantasmic Parade (instrumental) | Epica | | | 4:36 | instrument |
| A Picture of Your Mother | NewFound Road | | | 3:08 | instrument |
| A Place Called Always | Herrick | | 5 | 4:12 | instrument |
| A Place in His Heart | Jill Jenson | | | 3:35 | instrument |
| A Place in This World | Taylor Swift | | 4 | 3:19 | instrument |
| A PRETTY GOOD GUY | Chris Knight | | | 2:27 | instrument, instrument (as “big mandolin”) |
| A Pretty Wreath for Mother’s Grave | Reno and Smiley | | | 3:04 | instrument |
| A Promise to Distinction | $wingin’ Utter$ | | 3 | 2:08 | instrument |