When COVID changed our daughter's wedding of 220 in October at Pebble Beach to an immediate family only in an outdoors courtyard in San Francisco, I (MOB) emailed Sutro Strings and other vendors to check availability. The ONLY and immediate response I received was from Sutro Strings. Their manager is the ultimate professional and there was never a lag in correspondence or response. We made sure COVID protocols were followed. The string quartet wore masks, were spaced sufficiently apart and since outdoors with fresh air--the quartet felt protected as did our guests. I (as the MOB) was given a Music List by Sutro, very detailed and easy to select, made my choices and on the day of our daughter's wedding---the quartet DELIVERED a beautiful accompaniment for my husband to walk our daughter down an aisle. There was lovely music before and after the ceremony---the bride and groom were happy and so were all the guests. I (as the MOB) am a very exacting person who knows what they want and Sutro Strings is the ONLY choice and I am happy to refer them to future brides/grooms and their families.