Kanye West & Ty Dolla $ign, collectively known as ¥$, the two signs for the Japanese currency Yen and the American currency Dollar. Making it YenDollar, further being broken down to Ye ‘n’ Dollar. They began making joint music in 2014, when they were working on Ye’s seventh studio album The Life Of Pablo. Following the album’s release, Ty Dolla $ign became one of Ye’s most frequent collaborators, contributing to some of his most prominent modern works — both released and unreleased — including Ye and Yandhi.