FWIW here's a few Beatles tunes that I covered quite often with my kids before bed when little and recommend:
I Will
Bad Boy
All My Loving
Hello Goodbye
All Together Now
All You Need Is love
I've Just Seen A Face
All I've Got to Do
You Won't See Me
Love Me do
Twist and Shout
Words of Love
I should Have Known Better
Penny Lane
When I'm 64
All My Loving
Little Child
Hold Me Tight
It Won't Be Long
Rocky Racoon
Ob la di
The Word
Tell Me Why
You can't Do That
Can't buy me Love
Eight Days A Week
I Will
Bad Boy
All My Loving
Hello Goodbye
All Together Now
All You Need Is love
I've Just Seen A Face
All I've Got to Do
You Won't See Me
Love Me do
Twist and Shout
Words of Love
I should Have Known Better
Penny Lane
When I'm 64
All My Loving
Little Child
Hold Me Tight
It Won't Be Long
Rocky Racoon
Ob la di
The Word
Tell Me Why
You can't Do That
Can't buy me Love
Eight Days A Week