Maswanganyi is also active as a solo artist on both the concert and opera stages. She has given recitals for Presidents Thabo Mbeki and Nelson Mandela. Some of her operatic roles are Musetta ("La bohème"), Valencienne ("The Merry Widow"), Amelia ("Amelia al Ballo"), Arminda ("La finta giardiniera") and Contessa Ceprano ("Rigoletto"). Some highlights of her career include the title role in "Carmen Jones" with the London Philharmonic at Royal Festival Hall and Bess in "Porgy and Bess" at the Cape Town Opera, Deutsche Oper Berlin, and Norwegian National Opera. In April 2011, she portrayed the title role in the world premiere of Bongani Ndodana-Breen's "Winnie: The Opera" at the State Theatre in Pretoria.