If I say:
Wow! Diwali party, that sounds great; on the lighter note, who is sponsoring it?
Am I correct in using "on the lighter note"? I am using it as saying something funny/witty.
Please let me know, if it is wrong, the correct usage of it.
No. On a lighter note generally means "On a less serious topic." In addition, the phrase is typically used with the word a, not the word the.
Typically used as a formal way of gracefully switching from a serious topic to a less serious one.
Manchester United has dropped crucial points in the last two EPL encounters making the fans restless. On a lighter note, we need to drink our heads off this evening to celebrate your birthday.
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