Saidus Salehin Khaled Sumon (born 8 January 1973), popularly known by his nickname Bassbaba Sumon, is a Bangladeshi rock singer-songwriter, bass player, composer, music producer and founder of the Bangladeshi rock band Aurthohin.

He is mostly known for his slapping and tapping style in bass playing and is considered to be the most influential and greatest bassist in the country.

According to the website labella, Sumon has single handedly changed the role of bass guitar in Bangladeshi Music.

He joined one of the most popular bands in Bangladesh 'Feelings' as a bassist when he was 16 where he played with Faruq Mahfuz Anam, commonly known as James.

It is said that bass playing has become a hugely attractive thing to the young music lovers of this country only because of the influence of Bassbaba Sumon.

[6] In 2016 he released his first solo bass album named "Soul Food Part 1".In the album, Sumon collaborated and featured world-renowned musicians, the likes of Felix Pastorius, Robert ‘Bubby’ Lewis, Josh Cohen, Bob Franceschini, J.D.

[8] Sumon has cited Steve Harris as his primary influence for switching to bass from guitar.

He was also inspired by various funk bassists such as Victor Wooten, Billy Sheehan and Stuart Ham.

His notable solos are - Shaat Din, Guti (The Finale), Surjo 2, Nirbodh, Nikkrishto 3, Punorjonmo (Guti-5), Cancer Casserole, Better Call Salt & The Walking Bread, Tapping Tempura, etc.

[6] After the release of Aurthohin's fourth album, ' Dhrubok', Sumon's health deteriorated.

After four years of break, he came back with his band Aurthohin with a bang on 17 December 2021 in front of 35,000 people.

[9] He has a wife named Nazia Salehin Khaled (1996-present), who sang with him on his tribute album for John Denver.