Jón Rafnsson (born 1958) is an Icelandic bass player, music teacher, and record publisher whose work encompasses electric bass and double bass in jazz, blues, rock, classical music, theatre, and dance-band settings. He is the founder and owner of JR Music and has worked in music since his teenage years. His career began in the mid-1970s, when he was self-taught on electric bass and guitar and played with rock and dance groups on Iceland’s south coast. That early practical ensemble experience became an important counterpart to his later work as a versatile accompanist, collaborator, and organiser of recording and performance projects. ([jrmusic.is](https://jrmusic.is/en/jon-rafnsson/um-jon-rafnsson/?utm_source=openai)) From 1976 to 1983, Rafnsson studied classical music at Sigursveinn D. Kristinsson’s School of Music, studying violin, piano, and double bass. He subsequently continued advanced double-bass study in Stockholm with Thorvald Fredin. He also earned a music-teaching qualification from Stockholms musikpedagogiska institut (SMI), with pedagogy and double bass among his principal subjects and additional study in choir and orchestra conducting. His education therefore joined instrumental training, a classical foundation, and pedagogical preparation. Since returning to Iceland from Sweden in 1990, he has combined performing with teaching at the Hafnarfjörður Music School. ([jrmusic.is](https://jrmusic.is/jon-rafnsson/um-jon-rafnsson/)) After returning to Iceland in 1990, Rafnsson became active across several parts of the country’s musical life. His published CV describes work in jazz, blues, rock, and classical music; with dance bands; and in theatre, both as a musical director and instrumentalist. It also credits him with playing on numerous recordings. His selected-recordings list documents work with Guitar Islancio, DJÄSS, Delizie Italiane, and the Svare/Thoroddsen Trio, as well as recordings involving singers and performers including Andrea Gylfadóttir, Kristjana Arngrímsdóttir, Thor Breiðfjörð, Margrét Eir, and Anna Pálína Árnadóttir. This recorded output places him in a continuing bass-player role across many kinds of repertoire and ensembles rather than in a single permanent band. ([jrmusic.is](https://jrmusic.is/jon-rafnsson/helstu-hljodritanir/)) A major part of Rafnsson’s career is Guitar Islancio, the trio he founded in 1998 with guitarists Bjorn Thoroddsen and Gunnar Thórdarson. The group has worked with folk songs sung and played across generations, using improvisation to give concise melodies a contemporary character while retaining their connection to Icelandic cultural heritage. Rafnsson’s double bass is part of the trio texture in which guitars and bass shape harmony and pulse. Releases involving him include the first three Guitar Islancio albums, Scandinavian Songs, Icelandic Folk, Best of, and the 2017 collection Þjóðlög / Folksongs / Volkslieder. The project also issued a music book containing arrangements of 22 Icelandic folk songs. ([jrmusic.is](https://jrmusic.is/jr-utgafa/book-and-cd/)) Rafnsson has also participated in projects that bring distinct musical traditions into contact. Delizie Italiane, formed in 2000, consists of Leone Tinganelli on vocals and guitar, Jón Elvar Hafsteinsson on guitar and vocals, and Rafnsson on double bass and vocals. The trio has released Passione, Delizie Italiane, and La vita con te. The latter focuses on Icelandic songs given Italian lyrics, alongside two Italian songs performed in their original language and three compositions by Tinganelli. Rafnsson’s bass playing thus forms part of an ensemble project that connects Italian song repertory with Icelandic popular-song material. ([jrmusic.is](https://jrmusic.is/en/delizie-italiane/um-delizie-italiane/?utm_source=openai)) In the Svare/Thoroddsen Trio, Rafnsson played double bass alongside Danish clarinettist Jørgen Svare and guitarist Bjorn Thoroddsen. The group was formed in 2002 following a concert in Akureyri commemorating clarinettist Finn Eydal, although Svare had previously appeared with Guitar Islancio at the Reykjavík Jazz Festival in 2000. Its repertoire centred on swing jazz inspired by earlier masters, original compositions, and music by Django Reinhardt. Jazz Airs was released in 2003, followed by Sweet and Lovely; the compilation Radio Jazz appeared in Mexico in 2008. The trio performed at jazz festivals in Iceland, Denmark, and the United States, and Jazz Airs appeared in Steve Rubin’s JazzTimes Critics’ Picks for 2004. ([jrmusic.is](https://jrmusic.is/jr-verkefni/svare-thoroddsen-trio/)) In the trio DJÄSS, Rafnsson plays bass with Karl Olgeirsson on piano, Rhodes, and vibraphone, and drummer Kristinn Snær Agnarsson. On the group’s self-titled album, he is credited as co-composer with Olgeirsson of “29,” while the remaining listed pieces are by Olgeirsson. DJÄSS releases associated with Rafnsson include Songs from the Top of the World, We Ride Polar Bears, the self-titled album, and Tilbrigði um Gunnar Þórðarson, jazz arrangements of eleven songs by Gunnar Thórdarson. More recently, Rafnsson played bass on Bjorn Thoroddsen’s Friday Night @ Hringbraut, released in January 2026, with Sigfús Örn Óttarsson on drums. He also performed with Thoroddsen, Janne Schaffer, Jonas Gideon, and Sigfús Örn at Salurinn in Kópavogur on 21 February 2025. ([jrmusic.is](https://jrmusic.is/en/jr-utgafa/djass/?utm_source=openai))