1. 'Amor imborrable' by Marco Katz. Marco on trombone along with Bob Rodríguez on piano, Ron Glick on drums, and Mario Rodríguez on bass. New York City, 1999.

2. 'Obseción' by Pedro Flores, Marco plays trombone and sings with Dan Andersen on guitar, Matthew Golombisky on bass, and Charles Brewer on drums. New Orleans, 2003.

3. 'Nathalia' by Marco Katz. Marco on trombone and Bob Rodríguez on piano. Engineered by Pierre Sprey and produced by Larry Willis at Mapleshade Studios, Upper Marlboro, Maryland.

4. 'Casey Dog Blues' by Marco Katz. Marco plays trombone with Dan Andersen on guitar, Matthew Golombisky on bass, and Charles Brewer on drums. New Orleans, 2003.

5. 'Caballo viejo,' a song by Simón Díaz, arranged by Marco Katz who plays trombone on this recording with the pianist Bob Rodríguez.