Related Clues:

• 'Aha!' ... or a hint to 18-, 23-, 37-, 48- and 58-Across
• "Now it makes sense"
• Expression of dawning comprehension
• 'What a Wonderful World' starter
• ''It's obvious now''
• Bad English "When ___ You Smile"
• ''That's it''
• 'Ah, now it's clear'
• 'Oh, got it!'
• "So THAT's what's going on here!"
• "That's understood"
• Fortune-teller's intro
• Following remark?
• 'So THAT'S what you mean'
• "So THAT'S what you mean"