As a classical musician who has played in the styles of twentieth century popular music, I developed an interest in studying and analyzing popular music, particularly Heavy Metal music. This study focuses on Heavy Metal's musical language of the period between the early 1970s and mid-1980s, including bands such as Deep Purple, Black Sabbath, Ozzy Osbourne, Judas Priest, and Iron Maiden. It covers the historical background of the style, then analyzes extensively the harmonic structures of the genre and examines the form, rhythm, and melodies using statistical data from a corpus selection of Heavy ...

In his writings, Wadia Sabra (1876-1952) announced the creation of a “Universal Scale” and a “New Unit of Interval Measurement”. However, it is noteworthy that this particular work lacks precise information related to its numbers. This study aims to reconstruct and reveal the related numbers and tables, by researching Wadia Sabra’s archive. Also, this study reviews the acoustical and musical characteristics of this particular work of Sabra, its validity, and its possible new input to the musical field.