The Portuguese soprano, Orlanda Velez Isidro, started her singing studies at the Lisbon Conservatory of Music. In 1997 She graduated in Musicology from the University of Lisbon. After finishing her studies in Portugal, she moved to Holland to study at the Royal Conservatory of The Hague, where she graduated in 2000. She also took regular lessons with Ronald Kleekamp (Holland), Rolande van der Paal (Belgium) and the Baroque repertoire with Jill Feldmann. In 2001 She was awarded third price at the "Concours International de Chant Baroque de Chimay-Belgique".

Orlanda Velez Isidro sings regularly with the Amsterdam Baroque Choir (Ton Koopman), and with the Dutch Chamber Choir (Nederlands Kamerkoor) in Holland.

As a soloist she has worked with several conductors like Eduardo Lopez Banzo, Michel Corboz, Frans Brüggen (recording of Mendelssohn's Midsummer Night's Dream with the Orchestra of the 18th Century), William Christie (Ambronay 98, the project "Le Jardin des Voix" with Les Arts Florissants and recordings of Moulinié Motets and sacred music of Charpentier), Ton Koopman and The Amsterdam Baroque Orchestra & Choir (several programs of Monteverdi, J.S. Bach, Carl Philipp Emanuel Bach (recording Matthäus-Passion), and Georg Frideric Handel) and Fredrik Malmberg and the Helsingborgs Symfoniorkester.

In the operatic repertoire Orlanda Velez Isidro performed as Miss Jessel in Benjamin Britten's The turn of the Screw, (2001 Oporto Festival conducted by Brad Cowen), in 2005 as Madame Mao in a Dutch production of John Adams' Nixon in China.

Orlanda's preferences for repertoire are Renaissance, Baroque and contemporary. She performs Baroque Music regularly with ensembles such as De Swaen, Musica Temprana (Recording Al Uso de Nuestra Tierra), The Kassiopeia Quintet (recording I, II and III books of Madrigals of C. Gesualdo), Segréis de Lisboa (recording "Musica na Obra de Gil Vicente") and the Ensemble Udite Amanti.

She has also participated in Jill Feldman's CD of Italian Baroque vocal music, singing Mazzocchi duets.