Hasse's bands from over the years include:
- The Islanders
- The Nameless
- The Typhoons
- Jormas
- Blues Section
- Piirpauke
- Hasse Walli Dakar Sound
- Hasse Walli's Afro-Line
- Hasse Walli & Asamaan
- Hasse Walli & Suuret Setelit
- Hasse Walli Power Trio
- Hasse Walli & Steve Webb

HASSE WALLI, born 1948, is Finland's first so-called "super guitarist". He started playing jazz drums at the age of 9 and continued playing drums for 8 years. He started performing in 1962, and switched to lead guitar in 1965. In 1966 he turned professional joining Jormas, the top band in Finland at the time, and frequently toured Scandinavia.

In 1967 Hasse made his breakthrough as the first Clapton-Hendrix-influenced improvising guitarist in Finland, with the band Blues Section. At the same time he was also involved in several cross-over bands with jazz musicians.

In 1969 a serious car accident broke Hasse's left arm, and forced him out of playing for some years, but a second surgery in 1973 restored his playing ability.

In 1974 Hasse was a founding member of PIIRPAUKE, the first Finnish band to modernize folk music from Finland as well as other countries. The style of music, which nowadays would be called "world music", gained Piirpauke wide popularity. Extensive tours followed in Scandinavia, Germany, Holland and Switzerland. In 1975 the band recorded its first LP ("Piirpauke", Love Records, LRCD 148), and Hasse's solo on the kantele-tune Konevitsan Kirkonkellot (Church Bells of Konevitsa) pushed the record into the TOP 10. This solo is considered a classic in Finnish guitar music, and the track has since been used in several feature films and documentaries.

In 1977 Hasse started leading his own bands, and began studying Jamaican, Cuban and African music. From 1982 onwards Hasse spent ten winters in Senegal, West Africa, studying and playing with local musicians, including Youssou N'Dour. Hasse was the first musician to bring modern urban African music to Finland and Estonia, and his 8-piece Senegalese band Hasse Walli & Asamaan toured Finland and Sweden widely between 1988-92, and also played concerts in London.

In 1993 Hasse also returned to his blues-, rock- and Hendrix-roots and formed his "Power Trio". He has also led a 7-piece band in Tallinn, Estonia, with local young musicians.

Versatility is an important factor for Hasse's work, and in this framework his co-operation with Steve Webb has an important role.

In 2002 Hasse returned to Dakar, Senegal, and formed a brand-new formation of "Hasse Walli & Asamaan", to celebrate his 40-years anniversary as a performing artist. Hasse has performed worldwide in more than 20 countries and has made radio programs on African music for Finland's Radio YLE and Radio City Helsinki.

Since 2000 Hasse has worked as an independent record producer, with his 5th production (SWEET NINA, HCD-05) released in November 2005. (Check the news section for new releases)

For more information on Hasse Walli please see the book "Hasse Walli ja Appe Vanajas - Hehkuva Kitara" published in 1996 by Otava in Finnish (ISBN: 951-1-13836-7)