useless trivia: What Word Means: More Sure?

Questions

What specially "trained" singers first appeared in the sistine chapel choir in 1550?

What sport did terence trent d'arby compete in before he was a pop star?

What stage name is used by Gordon Sumner?

what steam powered keyboard instrument is named after the muse of eloquence?

what style of music was exemplified by benny goodman & artie shaw?