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	Josetxu Obregon (cello) Nicola Fiorenza - Concerto for 2 violins, cello obbligato & b.c. in D Josetxu Obregon (cello) , La Ritirata ensemble La Ritirata & Josetxu Obregó (4) Antonio Caldara - Cello Sinfonia Josetxu Obregon (cello) , La Ritirata ensemble recorded in Spain in 2019. (5) Juan Crisostomo de Arriaga - Theme and Variations for String Quartet, op. 17 Josetxu Obregon (cello) , La Ritirata ensemble 2013, Real Conservatorio de Musica, Madrid. (2) Juan Crisostomo de Arriaga - String Quartet No.1 in d-moll (1823) Josetxu Obregon (cello) , La Ritirata ensemble 2013, Real Conservatorio de Musica, Madrid. (4) Giovanni Battista Pergolesi - Concerto for 2 claviers, strings and continuo (apocrypha?), P.deest Ignacio Prego- (harpsichord), Daniel Oyarzabal (harpsichord), Josetxu Obregon (cello) , La Ritirata ensemble CD 2018 (4) Juan Crisostomo de Arriaga - String Quartet No.3 in Es-dur (1823) Josetxu Obregon (cello) , La Ritirata ensemble 2013, Real Conservatorio de Musica, Madrid (2) Nicola Fiorenza - Concerto for violin, strings & b.c. in D major Josetxu Obregon (cello) , La Ritirata ensemble La Ritirata & Josetxu Obregó (3) Juan Crisostomo de Arriaga - String Quartet No.2 in A-dur (1823) Josetxu Obregon (cello) , La Ritirata ensemble 2013, Real Conservatorio de Musica, Madrid (1)