WonderPlay Sing Along — source credits
Recordings: The Baby’s Songbook, sung by Carol Stripling, LibriVox (2011).
https://librivox.org/the-babys-songbook-by-walter-crane/
https://archive.org/details/babys_songbook_1102_librivox
Archive license: CC0 1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/
Lyrics: historical public-domain texts, The Baby’s Opera and The Baby’s Bouquet, Walter and Lucy Crane.
https://www.gutenberg.org/ebooks/25418
https://www.gutenberg.org/ebooks/25432
Edited on 2026-10-29: spoken introductions, dedication and closing announcements removed; MP3 re-encoded. Original recordings remain available at the source.

Twinkle, Twinkle, Little Star: sung by Dcoetzee (2012), CC0 1.0. Converted from Ogg to MP3.
https://commons.wikimedia.org/wiki/File:Twinkle_Twinkle_Little_Star_-_sung_with_full_lyrics.ogg
https://creativecommons.org/publicdomain/zero/1.0/

Itsy Bitsy Spider: Anaheim Libraries; sung by Angel Sauceda Garcia (2014). CC BY 3.0. Audio extracted, opening Ready trimmed, converted to MP3.
https://commons.wikimedia.org/wiki/File:Itsy_Bitsy_Spiter_-_English.webm
https://www.youtube.com/watch?v=J4sQ745Qw64
https://creativecommons.org/licenses/by/3.0/