Pianist and singer Joe Stilgoe helps Cerys Matthews and Jeffrey Boakye compile the next five tracks for the growing playlist, with musical connections taking us from a controversial singing style to the Austrian Alps.

DJ and BBC Asian Network presenter Sonny Ji and voice coaches Dr Gillyanne Kayes and Jeremy Fisher provide insights into the techniques and background to individual tracks.

Presenters Cerys Matthews and Jeffrey Boakye
Producer Jerome Weatherald

The five tracks added to this week's playlist:

It Don't Mean a Thing by The Boswell Sisters
She Taught Me How to Yodel by Frank Ifield
Edelweiss by Bill Lee
Piya Tu Ab To Aaja by Asha Bhosle
Lose My Breath by Destiny's Child

Other music in this episode:

Sandstorm by Darude
I'm Forever Blowing Bubbles by Doris Day
Rum and Coca-Cola by The Andrews Sisters
Chattanooga Choo Choo by The Andrews Sisters
Throat singing by Karin and Kathy Kettler
Arizona Yodeler by The DeZurik Sisters
Yelli by the Baka Forest People in the Cameroon rain forest
Daddy and Home by Jimmie Rodgers
A Yodeling Hobo by Gene Autry
Yodelling Mozart by Mary Schneider
Zombie by The Cranberries
Good Sign, Bad Sign by Monty Norman
Crazy In Love by Beyoncé (Homecoming Live)
Let's Go Blue by the University of Michigan Marching Band Show less