| Song Title | Appearing With | Album | Notes | Year |
| Full Moon | Juniper | The J-Plane | - | 1994 |
| Rusted Sparkle | Juniper | The J-Plane | - | 1994 |
| Indeterminate | Juniper | The J-Plane | - | 1994 |
| Not Quite Divine | Juniper | The J-Plane | - | 1994 |
| Enough | Juniper | The J-Plane | - | 1994 |
| Insane | Juniper | Manna | - | 1995 |
| Lie to an Angel | Juniper | Manna | - | 1995 |
| Relief | Juniper | Manna | - | 1995 |
| Shannon Court | Juniper | Manna | - | 1995 |
| I Just Can't Help Believing | Juniper | Natural Born Elvis | Elvis Presley Cover | 1998 |
| Weatherman | Juniper | Weatherman | - | 1998 |
| Little Sister | Juniper | Weatherman | - | 1998 |
| The Rage | Juniper | Weatherman | - | 1998 |
| World Is Dead | Juniper | World Is Dead | - | 1998 |
| You | Juniper | World Is Dead | - | 1998 |
| Orchard | Juniper | World Is Dead | - | 1998 |
| Weatherman | Juniper | World Is Dead | - | 1998 |
| Delicate | - | O | - | 2002 |
| Volcano | - | O | - | 2002 |
| The Blower's Daughter | - | O | - | 2002 |
| Cannonball | - | O | - | 2002 |
| Older Chests | - | O | - | 2002 |
| Amie | - | O | - | 2002 |
| Cheers Darlin' | - | O | - | 2002 |
| Cold Water | - | O | - | 2002 |
| I Remember | - | O | - | 2002 |
| Eskimo | - | O | - | 2002 |
| Prague | - | O | - | 2002 |
| Silent Night | - | O | - | 2002 |
| Happy Xmas | - | It's All Bells | John Lennon Cover | 2002 |
| Get The Party Started | Lisa Hannigan | Even Better Than the Real Thing Vol. 1 | Pink Cover | 2003 |
| The Professor & La Fille Danse | - | B-Sides | - | 2004 |
| Lonelily | - | B-Sides | Demo | 2004 |
| Woman Like a Man | - | B-Sides | - | 2004 |
| Moody Mooday | - | B-Sides | - | 2004 |
| Cannonball | - | B-Sides | - | 2004 |
| Lonely Soldier | Christy Moore, Lisa Hannigan | Lonely Soldier | - | 2004 |
| Desafinado | Lisa Hannigan | Goldfish Memory | Antônio Carlos Jobim Cover | 2005 |
| Once I Loved | Lisa Hannigan | Goldfish Memory | Antônio Carlos Jobim Cover | 2005 |
| Waters Of March | Lisa Hannigan | Goldfish Memory | Antônio Carlos Jobim Cover | 2005 |
| Don't Explain | Herbie Hancock, Lisa Hannigan | Possibilities | - | 2005 |
| The Power Of Orange Knickers | Tori Amos | The Beekeeper | - | 2005 |
| When Doves Cry | - | Triple J: Like a Version | Prince Cover | 2005 |
| Unplayed Piano | Lisa Hannigan | Unplayed Piano | - | 2005 |
| Cross-Eyed Bear | - | War Child: Help: A Day In The Life | - | 2005 |
| 9 Crimes | - | 9 | - | 2006 |
| The Animals Were Gone | - | 9 | - | 2006 |
| Elephant | - | 9 | - | 2006 |
| Rootless Tree | - | 9 | - | 2006 |
| Dogs | - | 9 | - | 2006 |
| Coconut Skins | - | 9 | - | 2006 |
| Me, My Yoke + I | - | 9 | - | 2006 |
| Grey Room | - | 9 | - | 2006 |
| Accidental Babies | - | 9 | - | 2006 |
| Sleep Don't Weep | - | 9 | - | 2006 |
| Rat Within The Grain | - | 9 Crimes | - | 2006 |
| Childish | - | Dogs | - | 2007 |
| Que Sera, Sera | David Gray | Live Earth -The Concerts for a Climate in Crisis | - | 2007 |
| Then Go | - | Live from the Union Chapel | - | 2007 |
| Baby Sister | - | Live From The Union Chapel | - | 2007 |
| Be My Husband | - | Live From The Union Chapel | Nina Simone Cover | 2007 |
| Creep | - | Sounds Eclectic: The Covers Project | Radiohead Cover | 2007 |
| Making Noise | The Cheshire Project | Songs For Tibet – The Art of Peace | - | 2008 |
| There Are Debts | David Hopkins | There Are Debts | - | 2009 |
| Connoisseur of Great Excuse | - | Gasoline Rainbows | iTunes Release | 2010 |
| Lonely Soldier | - | Raise Hope for Congo | - | 2010 |
| Look at Me | - | Canciones de Cuna | - | 2010 |
| Under The Tongue | - | Music of Ireland · Welcome Home | - | 2010 |
| Back To Beginning | Lamb | 5 | - | 2011 |
| Everything You're Not Supposed To Be | Mélanie Laurent | En t'attendant | - | 2011 |
| One | - | Covered | U2 Cover | 2011 |
| Uncomfortable | Mélanie Laurent | En t'attendant | - | 2011 |
| You're The One That I Want | Angus & Julia Stone | The Flowerpot Sessions | John Travolta/Olivia Newton-John Cover, Live | 2011 |
| Hallelujah | - | Rock and Roll Hall of Fame, Vol. 10: 2008–2009 | Leonard Cohen Cover | 2011 |
| The Power of Orange Knickers | Tori Amos | The Beekeeper | - | 2012 |
| Sing | Maria Doyle Kennedy | Sing | - | 2012 |
| Time To Go | Mia Maestro | Blue Eyed Sailor | - | 2012 |
| My Favourite Faded Fantasy | - | My Favourite Faded Fantasy | - | 2014 |
| I Don't Want to Change You | - | My Favourite Faded Fantasy | - | 2014 |
| The Greatest Bastard | - | My Favourite Faded Fantasy | - | 2014 |
| It Takes a Lot To Know a Man | - | My Favourite Faded Fantasy | - | 2014 |
| Colour me In | - | My Favourite Faded Fantasy | - | 2014 |
| The Box | - | My Favourite Faded Fantasy | - | 2014 |
| Trusty and True | - | My Favourite Faded Fantasy | - | 2014 |
| Long Long Way | - | My Favourite Faded Fantasy | - | 2014 |
| Camarillas | - | My Favourite Faded Fantasy | - | 2014 |
| Hypnosis | - | The Prophet | - | 2015 |
| On Children | - | The Prophet | - | 2015 |
