He is the author of The Technics of Bel Canto (1905) and source for Vocal Wisdom: Maxims of Giovanni Battista Lamperti (1931).
Many of Giovanni’s students became international opera stars including Irene Abendroth, David Bispham, Agnes Huntington, Franz Nachbaur, , Marcella Sembrich, and Roberto Stagno.
There was famously bad blood between the elder and younger Lamperti, eventually resulting in a bitter schism between the studios and followers of Francesco and Giovanni.
A pupil of both Lampertis described the hostile situation thus: Strange as it may seem, father and son never understood each other and were never on good terms.
[1] The Technics of Bel Canto is the only book (other than the maxims recalled and published posthumously by his pupil William E. Brown) that Giovanni ever wrote on his method.