What is the fine-grained topic of the following text: This year the event takes place on July 29th from 4:00 pm to 9:00 pm - and the festival is upping its game for 2017 with a big-name headliner (The Roots) and a fresh new venue (Huntington Bank Pavilion at Northerly Island). Only return the topic.
2017 event details for a festival featuring The Roots at Huntington Bank Pavilion at Northerly Island