Ahead of Trey Anastasio Band’s intimate, two-night stand at Brooklyn Bowl April 28 and 29, the charity-giving app inLieu is offering fans a chance to win a free ticket to Sunday’s performance (4/28) by donating to Phish’s long-running organization, WaterWheel.

To enter the drawing, fans need to use the inLieu app to donate a minimum of $5, with each donation increasing their chance of winning two free tickets to Sunday’s show. WaterWheel will cease accepting donations related to the raffle at noon on April 26, and the winner will be announced via inLieu.

Fan can donate to WaterWheel and enter the TAB Brooklyn Bowl drawing via inLieu here.