Shout at a crowded venue (and a hint to 17-, 28-, and 49-Across) 11 letters

Crossword clues for Shout at a crowded venue (and a hint to 17-, 28-, and 49-Across) 11 letters:

DOWNINFRONT: Shout at a crowded venue (and a hint to 17-, 28-, and 49-Across)