Yaa Yaa is the stage name of Ghanaian singer-songwriter, actor, and recording artist Bertha Bridget Kankam. She previously went by Bertha instead of her current stage moniker. Despite having a wide vocal range, Yaa Yaa sticks to the Highlife, R&B, and Soul music genres. She is a guitarist and xylophonist. www.ghanacelebrations.com wishes you a pleasant birthday.