Watch The Letter People online: Episode 21 Double Cooperation and the -ING Sound

Cindy dreams a Cinderella dream of wanting to appear on the set of Frantic Freddy's Rocking, Hopping, Dancing Party. It's an exciting prospect, especially because Freddy introduces the -ING sound. It's a heavy sound, which means that short words with short-vowel sounds must double the single consonant. The highlight of the afternoon is the Letter Girls' performance of a song called The -ING Sound.

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