Aug. 7 has delivered unforgettable moments in Top 40 history. Meanwhile, artists including Stevie Wonder, Elton John, Britney Spears, Usher, and Glass Animals all made history on this day. Here’s a look back at the biggest events in Top 40 music history that happened on Aug. 7. 1970: Stevie Wonder released Signed, Sealed, DeliveredStevie Wonder released his 12th studio album, Signed, Sealed, Delivered. The album produced four Billboard Hot 100 hits, including the title track, “Signed, Sealed, Delivered I’m Yours,” which peaked at No.