The group quickly abandoned their skiffle roots in favour of beat music, with Lagerberg picking up bass guitar.

Upon becoming a professional band in 1964, Lagerberg competed with lead singer Tommy Blom as the group's de facto leader.

He has also collaborated with several other Swedish artists, including Fläsket brinner, Egba, Feta Heta linjen and has participated in several re-unions of Tages.

[4] During the late 1950s, the skiffle craze was storming through Europe, particularly Sweden, and affected many young people, including Lagerberg, who began playing the washboard".

[5] Following his stint in that band, he began playing guitar with a group called the Sharks who quickly got noticed by future members of Tages.

[8][9] Lagerberg would continue playing washboard with the group until his parents bought him a bass guitar as a Christmas present in December of that year.

[14] Much of Tages stage repertoire came from Lagerberg, who was passionate about both rhythm and blues and soul music, and as a result, he would scover records stores and find material by Muddy Waters, Wilson Pickett, John Lee Hooker and Otis Redding.

[20] It was released as the B-side of their debut single "Sleep Little Girl" in October 1964 and was also the first time Lagerberg's voice was committed to tape.

[20] The group's two following singles "I Should Be Glad" and "Don't Turn Your Back" were also penned by Lagerberg, with Larsson and Töpel as co-writers respectively.

[30] This saw Lagerberg further expand his creative influence over the band, reflected with baroque pop on tracks such as "Gone Too Far", one of two of his compositions found on the album.

[34][35] Following that release, Lagerberg became obsessed with Swedish folk music and as such, adapted elements into their fifth album, simply titled Studio.

[38] The quartet (consisting of Lagerberg, Larsson, Töpel and drummer Lasse Svensson) nonetheless carried on without Tommy Blom, performing as Tages for the remainder of 1968.

[43] Nonetheless, the group carried on as Tages, allowing their contract with Parlophone to expire, upon which they signed with manager Richard Reese-Edwards, who had previously worked with the Hep Stars.

[6] During his tenure as one, he played on several recordings, including Claes af Geijerstam's Out of My Hair and Lalla Hansson's Upp Till Ragvaldsträsk, which became critically acclaimed in the Swedish media.

He also worked with a studio group called Jason's Fleece together with ABBA session musicians Janne Schaffer and Ola Brunkert.

[63] However, leader Kenny Håkansson called and asked him to join,[6] upon which Lagerberg soon showed his influence on the band by incorporating more Swedish themes into the music, and made his record debut with the group on Kebnekajse II.

[6] According to Lagerberg, he left Kebnekajse to join Egba (short for Electronic Groove and Beat Academy),[65] who were relatively big on the Swedish progressive rock scene.

[6] Egba became the only group (excluding Tages) that Lagerberg became a permanent member for more than four years, playing on their albums Amigos Latinos (1978), Bryter Upp!

Fed up with the constant touring for the past 17 years, Lagerberg decided to quit Egba in 1981,[6] playing on roughly half of their album Omen (1984) He was replaced by Bruno Råberg.

[69] Rickfors invited the members to the farm for the first time in August 1990 just "for fun and meeting family", estimating there to be roughly 40–50 people present.

[71] It sold an estimated 170,000 copies in Sweden alone,[72] Rogefeldt's "Mitt bästa för dig" was released from the album as a single and managed to chart on Svensktoppen, staying at number one for 14 weeks between 1990 and 1991.

[79] Nonetheless, the reunion produced one album, Grymlings III, released in 2005, it spawned three singles, including "Det är något särskilt med dig" along with one by Lagerberg with lyrics by Peter LeMarc, "Där går min älskling".

[6] With the money he earned during his time in Grymlings, Lagerberg bought a personal computer, taking lessons on it before becoming an information systems technician,[6][7] which he worked with for many years.

[6] Following his time in Grymlings, Lagerberg briefly fronted an eponymous band in which he played songs from the Tages and Blond eras, sometimes with the inclusion of both Anders Henriksson and Björn Lindér.

[7] Lagerberg has stated that he prefers to write lyrics in English, as it "is the language of rock and roll,[6] but has written songs in Swedish, most notably for Grymlings.

[80] One of his earlier Swedish compositions was named "Balladen om killen" ("Ballad about the guy") which he wrote to Örjan Ramberg in 1969, while still in Blond.

[14][87] Vocally, Lagerberg tended to emulate several of his heroes, including Otis Redding, Wilson Pickett and Sam & Dave.