On March 13, Einziger tweeted a photo of himself with girlfriend, Ann Marie Simpson, and Eddie Vedder. He wrote, " In the studio with my girl and Eddie Vedder, recording strings for Pearl Jam's new album :)"

According to a tweet posted Friday by Einziger, it was in fact Simpson, an accomplished violinist, who was the one performing in studio with Pearl Jam. Einziger was merely in studio visiting. And, frankly, who wouldn't hang out with Pearl Jam if given the opportunity?