Company Studio Sol Comunicacao Digital LTDA created these great apps:
Cifra Club Tuner, Palco MP3: Músicas e podcasts, Metronome Cifra Club, Letras.mus.br, Cifra Club, Ouvir Música, The Lost Guitar Pick, Gerenciador do Palco MP3, Space Jumper: Odyssey, Cifra Club Academy, Letras Academy, and others..
