The rise of the internet has decentralized music production and distribution. Historically, independent musicians in Bangladesh and West Bengal faced significant barriers to entry through traditional record labels. The "Web Music" era has changed this through:
Bengali songs starting with M | Bengali MP3 download - Saregama web music in a to z bengali
For high-quality audio (320kbps) and no ads, these are your best bets: The rise of the internet has decentralized music
(Full 50-letter Bengali alphabet can be mapped with songs via user playlists.) web music in a to z bengali