All together, in music
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">all together in music</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tutti that I've seen before include "Orchestral passage" , "Every instrument to play" , "All (stage direction)" , "All performers (mus.)" , "With all instruments playing at once (music)" .)