Once More From the Top' is an expression used to indicate that a task should be repeated from the beginning. It is often used in the context of rehearsing a performance or repeating a process. The two crossword solutions for this term are 'AGAIN' (5 letters) and 'Overagain' (9 letters). Both words refer to the idea of repeating something, with 'AGAIN' being more general and 'Overagain' emphasizing the repetition.