Los Angeles three-piece Sir Sly make atmospheric and moody electronic-tinged pop music. Formed in 2012, Sir Sly feature vocalist Landon Jacobs along with Jason Suwito and Hayden Coplen. In 2013, Sir Sly released the EPs Ghost and Gold. . Los Angeles three-piece Sir Sly make atmospheric and moody electronic-tinged pop music. Formed in 2012, Sir Sly feature vocalist Landon Jacobs along with Jason Suwito and Hayden Coplen. In 2013, Sir Sly released the EPs Ghost and Gold.