During the summer of 1911, he appeared under the pseudonym Antonio Manuele in a series of concerts held in England.

[1] He performed in Rigoletto, Aida, and Il trovatore, Bizet's Carmen, some bel canto roles such as La favorite, I puritani, and Les Huguenots and Spanish zarzuela (Arrieta's Marina, in particular).

While in Philadelphia in 1924, he received a letter from Umberto Giordano, asking him to create the tenor role in his next opera, La cena delle beffe.

The second part of Lázaro's career, stretching from the mid-1920s to his final appearances in 1950, consisted of concerts and performances in Spain, Paris, and Italy.

Lázaro had a "wide-ranging, timbred, considerably vibrant, extended, bold, resilient even if slightly guttural voice," according to Paolo Padovan, with a brilliant metallic shine and a passionate approach to singing.