Abdullah Ibrahim, who helped define a genre of South African jazz music, has died at the age of 91, his family has said.

He "passed away peacefully, surrounded by his family in Germany, after a short illness", according to a statement released on behalf of the family.

His "creations honoured the South Africa that shaped his political commitment and musical brilliance", President Cyril Ramaphosa said in his tribute.

Ibrahim, born Adolph Johannes Brand in 1934, grew up in Cape Town and began composing at the piano at age 7, picking out tunes on the keyboard. He would go on to have a career that spanned eight decades and dozens of recordings.

These included the 1974 track Mannenberg, one of his most famous compositions, which later became linked to the struggle against white-minority rule in South Africa and apartheid, the system of legalised racism.

Ibrahim, who was initially known on stage as Dollar Brand, changed his name after converting to Islam in the late 1960s.

As a teenager, the pianist and composer played in a swing band, his own trio and then in a sextet called the Jazz Epistles, which also included another South African jazz great, Hugh Masakela.

As apartheid, which began to be legally enforced in 1948, became increasingly rigid, jazz music, which was seen as counter-cultural and encouraged racial mixing, was looked down on.

The political situation in South Africa led to the break-up of the band, and Ibrahim moved to Switzerland.

American jazz legend Duke Ellington heard Ibrahim and took him to the US. Gradually, his distinctive style began to emerge - music that recalled the sounds of South Africa, and mixed his country's vocal and harmonic traditions with the rhythmic feeling and improvisation of jazz, according to a BBC Radio 3 profile.

Despite living outside South Africa, he never forgot his roots and made frequent trips to the country to perform and record.

His final live appearance came at the Cape Town International Jazz Festival less than three months ago, "where he once again captivated audiences with the artistry, grace and profound musical vision that defined his life's work", the family statement said.

In her tribute, his partner Dr Marina Umari said: "Abdullah passed away peacefully with South Africa and its people in his heart. His love for his country never wavered, no matter where in the world he found himself.

"He has enriched our lives with his musical gifts and his involvement in making the world a better place," Ramaphosa said reflecting on Ibrahim's career.