[7] In 1932, he painted a now famous portrait of Banda Singh Bahadur which was a massive success with the public and jump-started his career as an artist.

[8][2] His style of painting was realistic, with focus on landscapes, Indian monuments, portraits, and imaginative subjects.

[7] Sohan's grandson, Hardeep Singh, is continuing the family legacy and is a painter as well, with an interest also in Gurmukhi calligraphy.

[2][9][7] Hardeep Singh creates calligraphy in the traditional scriptio continua method of writing Gurmukhi, with the endonym term being larivaar.

[7] The G. S. Sohan Singh Artist Memorial Trust is his namesake organization which was founded by his sons and grandson for the purpose of promoting the Sikh school of art.