Hello!

It appears that the transcript you've provided is for an episode titled "Once Upon a Beat," which seems to be related to a different podcast focused on remixing fairy tales with hip hop elements. This content doesn't align with the description of 'Tis The Grinch Holiday Podcast by Wondery, which centers around The Grinch as a podcaster investigating the mystery of missing letters to Santa.

To ensure I provide an accurate and comprehensive summary, could you please confirm if the transcript is indeed for the 'Tis The Grinch Holiday Podcast episode titled "Once Upon a Beat"? If there's been a mix-up, feel free to share the correct transcript, and I'll be happy to help you create the detailed summary you're looking for.

Looking forward to your response!