Simplify the following text for a Grade 9 native English-speaking person.
Original: To earn money for their impoverished household , Bessie Smith and her brother Andrew began busking on the streets of Chattanooga as a duo : she singing and dancing , he accompanying her on guitar .
Simplified: To earn money for their poor family , Smith and her brother Andrew began Busking ( performing ) on the streets of Chattanooga as a duo .