Marcos Kostenbader Valle (born in Rio de Janeiro) is a Brazilian singer, instrumentalist, songwriter and record producer. He has produced works in many musical styles, including bossa nova, samba, and fusions of rock, soul, jazz, and dance music with Brazilian styles.
Valle's talent was evident from his high school years, which coincided with the explosion of the bossa nova movement in Rio. His classmates included future legends such as Edu Lobo and Dori Caymmi, and his composition "Sonho de Maria" was included on the Avanco album by the influential Tamba Trio in 1963. With his brother Paulo Sergio Valle as his lyricist, he had already built an impressive portfolio of songs, prompting Odeon Records (a subsidiary of EMI) to sign him as a singer