The term in your search query refers to Mr-Jatt.org (and its variants like Mr-Jatt.com or Mr-Jatt.in). In the 2010s and early 2020s, this website became a massive repository for Punjabi, Bollywood, and Bhakti Sangeet (Devotional songs). They specialized in converting YouTube videos into high-quality MP3s (128kbps to 320kbps).
Search for "Bhakti MP3 Bot" on Telegram. These bots often have a mirror of the old Mr Jatt library. Command: /mp3 Hanuman Chalisa Udit Narayan . Hanuman Chalisa Mp3 Download Udit Narayan Mr Jatt
While the song itself is a 5/5 devotional masterpiece, the method (Mr Jatt) is risky and unethical. The term in your search query refers to Mr-Jatt