Welcome to Our Resource Library

As Mailbox Melodies has grown, the same thoughtful questions keep coming up from parents — about screen time, big feelings, why little ones crave repetition, and the reasons behind how we do things. So my husband, Glen, and I pulled the answers together in one place.

Think of this as a deeper look at the principles behind Mailbox Melodies — the why behind the music, explained in plain language and backed by real research. These are resources we’ve gathered and written ourselves, the same things we’d tell a friend. I’m so glad you’re here.

Chelsea at a table outdoors packing Mailbox Melodies envelopes, surrounded by stickers, cards and CDs — Packing this month’s envelopes

Music by Age From Chelsea Choosing a Subscription Gifts & Giving

Music by Age

start here if you know your child’s age

Babies at a music class sitting on a rug with shakers and small cymbals

15¢Mailbox Melodies0Babies“Listeners first”Music By AgeUSA

Chelsea leading a toddler music class on the floor with instruments

15¢Mailbox Melodies1Ones“The age of the bounce”Music By AgeUSA

Chelsea playing ukulele for a group of toddlers in class

15¢Mailbox Melodies2Twos“First singers”Music By AgeUSA

A three-year-old dancing in a park with a play silk and bubbles

15¢Mailbox Melodies3Threes“Song storytellers”Music By AgeUSA

A preschooler strumming a toy guitar and singing

15¢Mailbox Melodies4Fours“Music makers”Music By AgeUSA

Chelsea reading and singing to a circle of preschoolers on a blanket outdoors

15¢Mailbox Melodies5Fives“Steady beats”Music By AgeUSA

A six-year-old holding an acoustic guitar

15¢Mailbox Melodies6Sixes“Rhyme and reading”Music By AgeUSA

A grinning school-age girl wearing headphones

15¢Mailbox Melodies6+Big Kids“Still checking the mail”Music By AgeUSA

From Chelsea

essays on music & childhood

Chelsea leading a toddler music class, children reaching up to a rainbow parachute

New · Start here

Music for Toddlers: A Music Educator’s Complete Guide

The whole picture in one place — why music matters before five, what to sing at each age, and how to weave it into the day you already have.

Read the guide

9/17/26

Music Classes for Toddlers: The Class That Comes to You

Everything that makes a toddler music class work is already in your living room. Here is the ten-minute version, from a teacher who still runs the real thing.

8/18/26

50 Screen-Free Activities for Toddlers

Ten screen-free ideas you can start tonight — plus a free printable bingo game with all fifty, made for your fridge.

7/16/26

Why Your Toddler Wants the Same Song 100 Times: The Power of Repetition

Reading the same book for the 100th time? There’s brilliant brain science behind your toddler’s “again!” — here’s what repetition builds, and how to lean in without losing your mind.

7/28/26

The Magic of Routines: Why Predictability Helps Little Kids Feel Safe

Why do little kids fall apart when the schedule slides? The science of how predictability builds security, self-regulation, and calm — plus simple, flexible routines that actually stick.

7/2/26

Your Child’s Brain on Music: The Benefits of Music for Early Childhood Development

Music does far more than entertain a toddler. Here’s how rhythm and song quietly build language, the brain, and big feelings — plus simple ways to use it at home.

6/30/26

Why Screen-Free Matters in Early Childhood (and What Screens Quietly Replace)

The screen guilt is real — but the science is calmer than the headlines. Here’s what screens actually replace in the early years, and easy swaps that make screen-free feel doable.

6/29/26

Why Waiting Is a Superpower: The Benefits of Delayed Gratification for Kids

Can toddlers really learn patience? What the famous marshmallow study got right (and what it got wrong), plus simple, guilt-free ways to build the waiting muscle at home.

Choosing a Music Subscription

honest comparisons from a music educator

9/17/26

Best Music Subscriptions for Kids: An Honest Guide from a Music Teacher

Yoto, Tonies, streaming, the library — and my own. A music teacher compares the real options for kids, with prices and tradeoffs stated plainly.

9/17/26

Kids’ Music Subscription Cost: What You’ll Actually Pay

Subscription, hardware, extras — the three layers nobody advertises. The real first-year cost of Yoto, Tonies, streaming and Mailbox Melodies, mine included.