The crossover group's big brother Forte di Quattro is their strong point! He returned with his 3rd full-length album, HARMONIA, which focused on the vocals with the delicate harmony and powerful power of the male quartet. 

In 'Forte di Quattro', the title of the artist of the same name, after the Phantom Singer's first win, their famous songs and the sound of the band met and announced the first start. In the 2.5th album 'Colors', the members directly participated in producing and showed their own colors. 

In this album, new heartwarming and sad songs including Mozart's 'Lacrimosa', Andrea Scholl's 'White as Lilies', Coldplay's 'Fix You', and 'Boom Song' sung in the Phantom Singer finals will be released. included In particular, with the pianist Youngjoo Song's quartet and the classical string quartet, we made music that can focus more on the voices of four people. The beautiful voices of the members harmoniously fit into each song, and an album was born that proved that the most beautiful instrument is the human voice!