1985: Willson-Piper appeared on the single (Just like) Surf City by James Griffin and the Subterraneans. The song also appeared on the Immigrant Tango EP.
1987: He co-produced the single Blood Red Roses for the band Bell Jar.
1988/1990: He played on the Black In Sunshine single (1988) and wrote six songs on the Hidden Treasures album (1990) for Swedish singer Ann Carlberger.
1988/1989: He worked with Swedish musician Martin Rössel in Stockholm, and plays guitar on My Eyes (1988) and Paradiset (1989), as well as co-writing Spegel (Mirror) originally written in English as Just A Reflection and Kiss The Moon (1989). Together as Marty and Martin the pair wrote around twenty songs that remain unreleased to this day.
1989: Jules Shear’s 1989 album The Third Party recorded in Stockholm – one acoustic guitar, played by Willson-Piper, and one vocal sung by Shear.
1989: Charlie Sexton recorded Willson-Piper’s song I Can’t Cry on his second self-titled album.
1990: Willson-Piper played on tracks on Tom Verlaine’s album The Wonder, but is uncredited.
1991: Willson-Piper joins English band All About Eve where he remains for ten years, recording two studio albums – Touched By Jesus (1991) and Ultraviolet (2002) as well as one electric live album Live And Electric At The Union Chapel (2001) and two acoustic live albums Fairy Light Nights 1 (2000) and Fairy Light Nights 2 (2001).
1993: With Jules Shear and Aimee Mann he co-wrote the song Could’ve Been Anyone that appeared on Mann’s first solo album Whatever.
1994: He co-wrote The Sensual Hour and Sticks And Stones with Raoul Graf for Australian band The Infidels.
1996/2001: He co-wrote the song Battersea for All About Eve singer Julianne Regan’s side project Mice, as well as appearing on the track Miss World and A Dark Place.
1996: He played lead guitar on Scratch’s 1996 song We Got Fooled Again.
1996: He was a co-writer of the song Knock Me Out on 4 Non Blondes singer Linda Perry’s 1996 solo album In Flight. The song also appeared on The Crow: City Of Angels soundtrack and was credited to Perry/Willson-Piper and Jefferson Airplane legend Grace Slick.
1997: He co-wrote three tracks (and played on two) for Brix Smith’s 1997 album Happy Unbirthday, as well as co-writing and singing on most of the tracks on her 2007 album Neurotica.
1998: He played lead guitar on The Volares track Open Book.
1998: He worked with David Gedge’s Cinerama on their first album, Va Va Voom, and plays on seven tracks.
1998: He produced seven tracks on the album Elvis, Halleluja and Hurrah for Håkan Ahlström, as well as playing on five of them.
2000: Willson-Piper produced Swedish band Moderna Män’s album, Entré (2000).
2002: Willson-Piper forms Noctorum, a studio project with long time friend Dare Mason. Three albums are released, Spark’s Lane (2002), Offer The Light (2006) and Honey Mink Forever (2011). A new album is in the process of being recorded in 2017.
2002: Willson-Piper contributes electric and acoustic guitars to Bradley Cole’s album In Our Time.
2003: Willson-Piper recorded the song Motorcycle with Australian band Urban Folk Collective for their album Black Rabbit.
2004: Willson-Piper joins Australian Punk legends The Saints, relocating to Amsterdam and playing on the album Nothing Is Straight In My House (2005). He co-writes the song Passing Strange with Chris Bailey and plays over sixty shows throughout Europe and America.
2004: Willson-Piper featured on the tracks Who Knew the World Would End and All Your Kingdom on Edward Roger’s album Sunday Fables’ and again in 2008 on the follow up You Haven’t Been Where I’ve Been, on the tracks Graveyard Voices and What Happened To Manfred What Happened To Jane. He also appears on Ed Rogers upcoming album to be released in 2017, co-writing one track and playing on three tracks in total.
2005: He contributed THE guitar solo to Catherine Wheel singer Rob Dickinson’s single “Oceans”.
2005: Willson-Piper records Fly from Bryter Layter (1970) for the Nick Drake tribute album Jeremy Flies Vol. 2.
2006: Willson-Piper records Everything Means Nothing To Me from Figure 8 (2000) for the Elliot Smith tribute album Remote Memory.
2006: Willson-Piper performed on the tracks Martha’s Harbour and Circle on the White Rose Transmission album Bewitched And Bewildered.
2006: Noctorum contribute a cover version of Buffalo Springfield’s song Nowadays Clancy Can’t Even Sing, written by Neil Young to the 2006 tribute album Five Way Street.
2008: He contributed guitar solos to The Gronk’s Touch The Sun.
2008: Willson-Piper recorded the duet Beatles and Stones with Norwegian singer Marte Heggelund, for her album Treason.
2009: He contributed a four-page story entitled Keep On Truckin’ to the book “Hitchers Of Oz”.
2010: Willson-Piper features in the book “Rickenbacker 12: The Story Of The Guitars, The Music, The Great Players” in a two-page interview.
2012: In 2012 Willson-Piper joins forces with multi-instrumentalist Niko Röhlcke to form MOAT. Their debut album was released in 2013. A second album is on the way.
2014: Willson-Piper played bass with French band Sweet Gum Tree, contributing to the song Bird Of Passage (a duet with Arno Sojo and Isobel Campbell) on the album The Snakes You Charm And The Wolves You Tame as well as joining the band for their subsequent tour.
2015: Willson-Piper guests with Swedish progressive rock band Anekdoten, appears on the title track of their album Until All The Ghosts Are Gone, joins the band as a full time member and tours Japan, Poland, France, Germany, Italy, Armenia, Norway and Sweden throughout the following years.
2017: Willson-Piper plays guitar on the Duncan Brown version of “Alfred Bell” and bass on “Wounded Conversation” on Edward Rogers’ 2017 album TV Generation, co-writing the track “Listen To Me”. Listen here:
2017: Marty Willson-Piper and his wife Olivia Willson-Piper are featured on Atlantium‘s first release, yet to be named. Listen here: