12:10Music MakersProfessor Allegro's World of MusicEpisode 2: In the MountainsBBC Two Duration: 20 minutes Mon 14th Jun 2004, 12:10 on BBC Two Northern IrelandSeries exploring musical concepts. In this edition, an investigation of pitch. Featuring a trip to the Andes.GenresLearningMusicBrandMusic MakersSeriesMusic Makers: Professor Allegro's World of Music Source: BBC Online