Eberhard Weber is a German double bassist and composer. As a bass player, he is known for his highly distinctive tone and phrasing. Weber's compositions blend chamber jazz, European classical music, minimalism and ambient music, and are regarded as characteristic examples of the ECM Records sound.

Baden Powell de Aquino, known professionally as Baden Powell, was a Brazilian guitarist. He combined classical techniques with popular harmony and swing. He performed in many styles, including bossa nova, samba, Brazilian jazz, Latin jazz and MPB. He performed on stage during most of his lifetime. Powell composed many pieces for guitar, such as Abração em Madrid, Braziliense, Canto de Ossanha, Casa Velha, Consolação, Horizon, Imagem, Lotus, Samba, Samba Triste, Simplesmente, Tristeza e Solidão, and Samba da Benção. He released Os Afro-sambas, a watershed album in MPB, with Vinicius de Moraes in 1966.