Jack Hartmann Kids Music Channel: letters, sounds, counting, subitizing, and just for fun songs!
https://www.youtube.com/channel/UCVcQH8A634mauPrGbWs7QlQ
Cosmic Kids Yoga
https://www.youtube.com/user/CosmicKidsYoga
Dream English Kids: count 1-20 video is great!
https://www.youtube.com/user/DreamEnglishKids
Go Noodle: tons of fun movement and learning songs
https://www.youtube.com/user/GoNoodleGames
Have Fun Teaching: letter/sounds videos
https://www.youtube.com/user/havefunteaching?app=desktop
Dr. Jean
https://www.youtube.com/user/alexgmay
Koo Koo Kangaroo
https://www.youtube.com/user/kookookangaroo
Jim Gill Music