Complex sentence: In the lineage of great French dramatic and lyric-dramatic tenors, he proved to be a worthy successor to Jean de Reszke (the biggest male opera star of the 1890s), Leon Escalais and Albert Alvarez, each of whom enjoyed international careers.
Split into simpler sentences: In the lineage of great French dramatic and lyric-dramatic tenors, his place is secure. He proved to be a worthy successor to Jean de Reszke (the biggest male opera star of the 1890s), Leon Escalais and Albert Alvarez, each of whom enjoyed international careers.