"Nishshobdo Kolahol" is the debut and only album of pioneer heavy metal band of Bangladesh, In Dhaka . They were part of the four pioneer heavy metal bands including Rockstrata , Warfaze and Aces . The album was first released in 1992 from Sargam on cassette tape. It included 10 tracks with 2 instrumentals. Later in the '90s, Sargam released the CD Jewel Case version of the album, with a different front artwork and track list. That CD version (Sargam CD-036), known informally as the "Special Edition" , includes the 10 original tracks as well as 6 other unreleased studio tracks by the band, omitting the two instrumental tracks. Later in 2008, Sargam re-released the album (Sargam SACD-506) with the original cassette artwork and tracklist (10 tracks and 2 instrumentals) with a "silver" disc. The recording sessions of Nishshobdo Kolahol took place a few weeks before Rockstrata's debut album and and a few months before Warfaze's debut album (betw...