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