Arnaldo Antunes has been played on NTS shows including As I Was Moving Ahead, with Rio Seco first played on 3 August 2024.

Arnaldo Antunes (Arnaldo Augusto Nora Antunes Filho) was born in 1960 in São Paulo, Brazil. He has been making music and videos, writing poetry, performing, presenting shows and interventions in other media since 1980. He was a member of the musical group Titãs from 1982 to 1992, and together they released 7 albums.

In 1993 he released NOME – CD + Video + Book, putting together a multimedia project which associated poetry, music and computer animation (produced with the partnership of Celia Catunda, Kiko Mistrorigo and Zaba Moreau). The video "Nome" was presented in several exhibits and festivals held in Brazil, Italy, Argentina, Australia, Switzerland, Germany, Austria, France and Spain (received recommendation of the Jury at the Festival International de Video Cidade de Vigo 1995), Netherlands, Monaco, Uruguay, Cuba, Chile, Colombia and USA (received "Honorable Mention" at The First Annual New York Video Festival).

As a solo artist, Arnaldo Antunes also released the albums: NINGUÉM (1995), O SILÊNCIO (1996), UM SOM (1998), PARADEIRO (2001), SAIBA (Rosa Celeste/BMG 2004) and QUALQUER (Rosa Celeste/Biscoito Fino 2006). He also released other albums at special projects, including O CORPO (1999), a soundtrack especially produced for the Minas Gerais-based dance groupGrupo Corpo, and the album TRIBALISTAS (EMI/Phonomotor 2002), a collective project along with Marisa Monte and Carlinhos Brown.

His compositions have been inserted into the soundtracks of several movies such as Blue in the face, directed by Wayne Want and Paul Auster; Bicho de Sete Cabeças, directed by Lais Bodanzki; Dois Perdidos Numa Noite Suja, adapted from a novel by Plinio Marcos, directed by José Joffily; Benjamim, adapted from a novel by Chico Buarque, directed by Monique Gardenberg. His compositions have been covered by Adriana Calcanhotto, Ana Carolina, Barão Vermelho, Carlinhos Brown, Cássia Eller, Clã, Daniela Mercury, Elza Soares, Gal Costa, Gilberto Gil, Ira!, Jorge Ben Jor, Jota Quest, Lenine, Margareth Menezes, Maria Bethânia, Marina Lima, Marisa Monte, Nando Reis, Rita Lee, Sandra Sá and Zélia Duncan.