The cast

Yoli, and the nine.

One mascot, five Range Buddies, three Coaches. Every one of them exists to teach one specific thing — and none of them ever makes a child feel embarrassed to sing.

Nine characters

One mascot. Five Range Buddies. Three Coaches.

Calibration matches every child to their buddy. Coaches appear only when something specific is worth noticing — then step back. Ranges shown are approximate comfortable singing zones; the app transposes every song to fit.

Yoli, the antelope mascot
Mascot

Yoli

Hosts onboarding, guides calibration, and shows up on almost every screen. Warm, unhurried, slightly goofy.

Moss, a frog
Range Buddy G3–D4

Moss

Slow, dreamy, sits on a lily pad, croony. The lowest-range buddy.

Rumble, a bear
Range Buddy A3–F4

Rumble

Big, gentle, reassuring, hums constantly.

Clove, a cat
Range Buddy C4–A4

Clove

Playful, mischievous, struts everywhere.

Fern, a fox
Range Buddy D4–C5

Fern

Quick, bouncy, loves a fast song.

Pip, a wren
Range Buddy F4–E5

Pip

Tiny, thrilled by everything, flutters. The highest-range buddy.

Bumble, a bee
Coach · Rhythm

Bumble

Shows up when a child is consistently early or late, or on a tempo-focused song.

Nimbus, a whale
Coach · Breath

Nimbus

Shows up on songs with sustained notes if a child's breath runs out mid-note.

Bramble, a hedgehog
Coach · Confidence

Bramble

Starts curled in a ball. Uncurls a little each time a child keeps going. By the end, singing out loud too.

See them in action.

How it works Browse songs