Sammy Hagar and Lukas Nelson will join Bob Weir for one of his “Weir Here” concert/Q&A sessions at TRI Studios on February 13. Fans can submit questions via Twitter by using the hashtag #WeirHere. As usual, the Q&A will begin at 5:30pm PT/8:30pm ET and will be webcast for free. As previously reported, Dave Schools and Jason Crosby participated in last week’s “Weir Here” session. You can read the recap of their performance here.