To celebrate their forthcoming, rarity-filled box set Welcome to the Vault, the Steve Miller Band have shared a lost 1973 track dubbed “Say Wow!”

According to a press release, Welcome to the Vault “shows Miller opening up his voluminous archive of recordings for the first time ever. The milestone 3CD + DVD box set covers his genre-blurring six-decade career over 52 audio tracks, pairing a number of greatest hits and certifiable rock ‘n roll classics with 38 previously unreleased recordings that span demos, rehearsals, outtakes, vintage concert performances and 5 newly uncovered original Steve Miller Band songs recorded in the 1960s and 1970s. The accompanying DVD collects 21 live performances, among them legendary rare TV appearances and concert videos.”

Welcome to the Vault will be released on Oct. 11. Click here to pre-order.

Listen to the bluesy “Say Wow!” below: