Janet Jackson's iconic hit "All for You" has been a staple in music playlists for decades, but have you ever heard an a cappella rendition of this song? A cappella, which means "in the manner of" or "in the style of" in Italian, refers to singing without instrumental accompaniment. When applied to "All for You," the result is a hauntingly beautiful and intimate performance that showcases the vocal range and emotional depth of the singers.