D'Alegria Discovery upright bass, 4 strings, fretless, Freijó neck/body, flatwound strings, D'Alegria SB preamp and exclusive D'Alegria PP piezo pickup, played in conjunction with an acoustic (double) bass.

 Performance by Bruno Migliari ("Things Ain't What They Used To Be", by Duke Ellington, arranged by Bruno Migliari for solo bass)

D'Alegria Discovery upright bass, 4 strings, fretless, Freijó neck/body, flatwound strings, D'Alegria SB preamp and exclusive D'Alegria PP piezo pickup.

 Performance by André Carneiro
 Performance by Emerlist Davjack

4-string D'Alegria Discovery upright electric bass.
Performance by André Neiva, playing an upright Discovery bass at the Cama de Gato concert in Rio de Janeiro, Brazil.

Performance by Felipe Andreoli, playing an upright Discovery bass at Expomusic Fair 2006 in São Paulo, Brazil.