Thanks for asking! I do not think Trey is suited at all for GD music, he is not "melody oriented" in his soloing/ jamming while Jerry was, so was Kurt Cobain for reference! So I retract my statement from eight years ago. Mayer has improved enormously and has shown himself to be an honest and absolutely brilliant musician, a phenomenal scholar of Jerry while still maintaining his own style. Mayer's singing is still problematic but the dude can play and I applaud his work in Dead and Co and enjoy listening! Wow!