olive does concert booking and promo through la with the roxy being one the firm's main clients. since imma nerd i checked amber's touring stop and it looks like she played the roxy in 18. maybe they could have met up around then and struck something up. if not, she comes from a long line of music types (grandpa worked for rca, dad was in a touring musician for a bunch of people, mom owns a recording studio) that they could say was the catalyst of them crossing paths.