Larry wrote the music to a song released in 1987 called "Down On My Knees". Jørn Hoel from Norway performed it on one of his albums called Varme Ut Av Is. He sang it in Norwegian, and the title was translated as "Svikta Igjen".
 
 
Larry wrote the music to a song released in 1988 called "Det E Sant". Jørn Hoel from Norway performed it on one of his albums called Det Ingen Andre Får .
 
 
Larry composed a song called "The Wiseone" (along with Maureen McElheron) released on the soundtrack to The Tune in 1992.
 
 
Larry co-wrote a song in 1994 with Charles Lyonhart and Lincoln Schleifer called "Holyman". It hasn't been released yet. In addition, Larry along with Lincoln Schleifer produced the song.
 
 
Larry wrote the music to a song with Greg Trooper released in 1995 called "Night and Day". Jørn Hoel from Norway performed it on one of his albums called Jørn Hoels Beste. He sang it in Norwegian, and the title was translated as "Natt Og Dag".
 
 
Larry wrote 2 songs for Stephen Ackles' album, One For The Moon, released in 1995. In addition to writing "Betina" and "Ain't Nobody For Me", Larry also produced and arranged the album.
 
 
Larry wrote a song with Greg Trooper called "A Pirate's Life". It can be found on Greg Trooper's album, Noises In The Hallway from 1996.
 
 
Larry wrote a song with Richard Shindell called "Smiling" found on Richard Shindell's album, Reunion Hill from 1997. Larry also produced the album.
 
 
Larry wrote an instrumental Irish sounding tune called "Summer Reel". It can be found on Richard Shindell's album, Somewhere Near Patterson from 2000. (It can be heard on the album after "Spring") Larry also produced the album.
 
 
Larry wrote a song called "Sweet Release" found on Charles Lyonhart's album, Down To The Hard Line from 2001. Larry also produced several songs on the album. In addition, Larry co-wrote "The Sad, Sad Romance of The Road" with Lincoln Schleifer, and he co-wrote "Just Like You" with Charles Lyonhart for the album.
 
 
Larry wrote two songs for The Dixie Hummingbirds' album, Diamond Jubilation, released in 2003. "Someday" is a song he wrote in the 70's with The Hummingbirds in mind, and "When I Go Away" is a song he wrote on the 2003 Australian leg of Bob Dylan's tour. "When I Go Away" can also be found on Levon Helm's album, "Electric Dirt". Larry also produced Diamond Jubilition .

On April 25, 2012, Representative Maurice Hinchey took the floor of the U.S. House of Representatives in Washington and recognized the life of Levon Helm who passed away on April 19, 2012. He recited portions of Larry's song, "When I Go Away".

 
 
Larry wrote two songs for his solo acoustic guitar album, Rooftops, released in 2005. Rooftops is the title track and a song he wrote to accompany the painting on the cover of his album, painted by his father, William Campbell, many years ago. He also wrote "Henderson County", another instrumental. In addition, he produced the album.
 
 
Larry wrote a song called "Did You Love Me At All" which he debuted on Honky Tonkin' radio show (Columbia University Radio - WKCR 89.9 FM) on March 21st, 2006.
 
 
Larry wrote a song in the summer of 2007 called "Sins Of The Father". The song was debuted at several of Levon Helm's rambles, and it was also performed on January 23, 2008, when Larry and friends (Teresa Williams, Levon and Amy Helm and Lincoln Schleifer) performed at the New York Guitar Festival.
 
 
Larry, along with Levon Helm, wrote a song for the album Electric Dirt called "Growing Trade" released in 2009. "Growing Trade" tells a heartfelt story of a farmer's struggle to preserve his livelihood. Larry also produced the album.
 
 
Jorma Kaukonen and Larry wrote "Angel Of Darkness", a song for Hot Tuna's album Steady As She Goes, released in 2011. Larry wrote the music and they both wrote the lyrics. In addition, Larry and Jorma Kaukonen also wrote the music for "Easy Now Revisited", and Larry and Jack Casady wrote the music for "Smokerise Journey". Larry also produced the album.
 
 
Levon Helm and Larry completed the lyrics and wrote the music for "You'll Never Again Be Mine", a song half finished by Hank Williams. This song was included on The Lost Notebooks of Hank Williams, a collection of previously unheard songs by the country great released in 2011. Larry also produced the song.
 
 
Larry co-produced and co-wrote "Toast To Freedom", a song written for Amnesty International's 50th anniversary. The rhythm track was recorded at Levon Helm Studios in early April, 2011. The recording was released in 2012 and featured Levon Helm, Amy Helm, Teresa Williams, Donald Fagen, Ewan McGregor, Kris Kristofferson, Warren Haynes, Keb Mo, Carly Simon, Taj Mahal, Marianne Faithfull, Rosanne Cash, Blind Boys of Alabama, Eric Burdon, Mahalia Barnes, Matthew Houck, Shawn Mullins and many others.
 
 
Larry wrote "Surrender To Love", "Bad Luck Charm", "Another One More Time", "Everybody Loves You", "Did You Love Me At All", and "Ain't Nobody For Me", which all appear on his 2015 self-titled album with Teresa Williams. He co-wrote 2 other songs on the album: "Down On My Knees" with Louie Ortega, and "Midnight Highway" with Julie Miller. In addition, he produced the album.
 
 
Larry co-wrote "The Sweet", a song on The Hackensaw Boys' 2016 album, Charismo, with David Sickman. In addition, he plays fiddle on the song. Larry also produced the album.
 
 
Larry wrote "Contraband Love", "Save Me From Myself", "Hit & Run Driver", "The Wishing Well", "Three Days In a Row", "The Other Side of Pain" and "It Ain't Gonna Be A Good Night" which all appear on his 2017 album with Teresa Williams, Contraband Love . He co-wrote 1 other song on the album: "When I Stop Loving You" with William Bell. In addition, he produced the album.