[3][4] After the Bangladesh Liberation War in 1971, he emerged as a Gono Sangeet (inspiration songs for the masses) singer.

Some of his notable songs are "O Sokhina", "Shantahar", "Nelson Mandela", "Naam Tar Chhilo John Henry" and "Banglar Comrade Bondhu".

His next two publications were Muktijuddher Smriti Bijoyer Gaan and Gono Sangeeter Otit O Bortoman.

In 2013 he published three books - Amar Kotha, Jara Achhen Hridoy Potey and Smriti Alaponey Muktijuddho.

[8] On 14 July 2021, Alamgir was admitted to United Hospital in Dhaka with COVID-19 related complications.