This Gandharva channel in YT is new to me! This is quite a good one with Anayampatti Venkatasubramanian (violin) Ganapathyraman (mridangam) & Nerkunram Sankar (kanjira)
Concert link: https://www.youtube.com/watch?v=Ey5vH-Np6RY
Channel link: https://www.youtube.com/c/GandharvaThemusicfraternity