He moved to St. Augustine, Florida in 2003 to join alternative rock/post-hardcore band Postcard Audio, which quickly changed name to Moments in Grace a month after his arrival.

[13] Kirkpatrick's first musical project was a punk band named Shaft in Palm Beach Gardens, Florida, which also included guitarist James Glayat.

[2] Afterwards, Kirkpatrick briefly relocated to Ann Arbor, Michigan where he joined the startup metalcore band Bloodpact, with members of Earthmover.

[6] With an intact line-up, As Friends Rust recorded the song "Home Is Where the Heart Aches" at Goldentone Studios in late March 1998 with McGregor.

[19] Kirkpatrick recruited ex-Shaft and Roosevelt bandmate, guitarist James Glayat, to replace Bartsocas in As Friends Rust in October 1998, and the band returned to Goldentone Studios to record "The First Song on the Tape You Make Her" with McGregor.

[35] On October 5, 1999, Japanese record label Howling Bull Entertainment released the compilation Eleven Songs, which included a selection of As Friends Rust material from 1996–1999.

[40][41][42] As Friends Rust immediately embarked on a tour with Strike Anywhere to promote the release, playing shows across the entire United States in June 2000.

[4][43] The tour included several cross-over shows with Glasseater, Mid Carson July and The Agency (the three of which were on a separate tour together), as well as stops to play such festivals as Mixed Messages in Minneapolis, Minnesota, Pheer Festival in College Park, Maryland and Hellfest 2K in Auburn, New York (the last of which As Friends Rust did not play due to a last-minute change in venue).

[46][4] A month later, the band returned to Europe and the United Kingdom for a full five-week tour, from August–September 2000,[4] which included a handful of cross-over shows with Grade, Ensign and Garrison.

[50][4] Ex-guitarist Bartsocas, who was visiting Europe at the same time and had been travelling with the band, filled the vacant guitarist position for the next four weeks of shows.

[49][47] In 1998, Kirkpatrick joined acoustic musician Keith Welsh's live backing band, which eventually took on the name Tiger Mouth.

[3] The band had just released its second extended play, Diving Board, and recruited Kirkpatrick a couple of weeks before leaving on a tour in June 2001.

[62][63][64] Unhappy with the way Moonlight Survived sounded, the band returned to Salad Days in November 2003 to re-record some of the material, track a couple of extra songs, and fully re-mix the release.

[74] In promotion of the release, the band hit the road in December 2003; the trip culminating with a show at the House of Blues in West Hollywood, California in direct support of Thrice.

[70][71][76][77] Moments in Grace began touring full-time in support of its forthcoming Atlantic Records album, Moonlight Survived, remaining on the road for the next ten months.

[10] This included a tours with Engine Down, Statistics and Decahedron in January–February 2004,[78][79][80] Smile Empty Soul in February–March 2004,[81][82] Engine Down and The Jealous Sound in March 2004,[83][84][85] Bayside and Madcap in March 2004,[67][84][85] Thrice, Poison the Well, My Chemical Romance, Vaux and Darkest Hour in March–April 2004,[86][87][88] From First to Last and A Thorn for Every Heart for in April 2004,[89][90] Avenged Sevenfold, My Chemical Romance, Funeral for a Friend, Beloved and Noise Ratchet in April–May 2004,[88][91][92] and Smile Empty Soul and Steriogram in June 2004.

[99][100][101] Following Van's Warped Tour, Moments in Grace filmed a music video for "Stratus" with director Laurent Briet in Los Angeles, California.

[112] In September 2004, the band played a mix of headlining and co-headlining dates with The Working Title, Mae, Fear Before the March of Flames, A Thorn for Every Heart, The Kinison, Killradio and A Wilhelm Scream.

[115][116] In October–November 2004, the band was on the road with Hot Water Music, Alexisonfire, Planes Mistaken for Stars, Silverstein and Don't Look Down,[117][118] including a stop to play The Fest 3 festival in Gainesville, Florida.

[119][120] In late 2004, Kirkpatrick invited his former Shaft, Roosevelt and As Friends Rust bandmate James Glayat to replace Moments in Grace's guitarist Justin Etheridge.

[130] Kirkpatrick then rejoined As Friends Rust in March 2008, when vocalist Damien Moyal announced that the band would reunite for a series of European and British shows scheduled for August 2008.

[133][129][51] In June 2014, As Friends Rust traveled to Asia for the Japan Tour 2014, supported by Japanese hardcore bands Endzweck, Noy and Nervous Light of Sunday,[134][128] though Kirkpatrick was unable to attend and was temporarily replaced by former Culture drummer Joshua Williams.

[139][128] To support the release, As Friends Rust played three shows in 2015: one at Saint Vitus in Brooklyn, New York,[141][142][143] a second at Groezrock festival in Meerhout, Belgium,[144][128] and a third The Wooly as part of The Fest 14 in Gainesville, Florida.

[13] Following Kirkpatrick's return to Florida in 2018, As Friends Rust announced that it was actively writing and demoing new songs for a planned second full-length album.

[149][150] The band played three shows in 2019: one at The Kingsland in Brooklyn, New York, and two on the same day at Molotow in Hamburg, Germany as part of the Booze Cruise Festival.