is subject to all of the particular requirements of this mode.” (Sovetskaya Muzyka 1949:3). Azerbaijani conservatory throughout the 20th century produced significant scholars and scholarship. Among them, Rena Mamedova explored the philosophical content of mugham, as an Azerbaijani "formula of creative thinking". Elkhan Babayev wrote extensively on rhythmic aspect of mugham performance. The native scholars continued and expanded Hajibeyov's analysis of mugham. Mugham describes a specific type of musical composition and performance, which is hard to grasp with western concepts of music in another respect: for one, mugham composition is improvisational in nature. At the same time it follows exact rules. Furthermore, in the case of a suite-rhapsody-mugham the concept of improvisation is not really an accurate one, since the artistic imagination of the performers is based on a strict foundation of principles determined by the respective mode. The performance of mughams does therefore not present an amorphous and spontaneous, impulsive improvisation. With respect to the concept of improvisation, mugham music is often put in relation to jazz, a comparison that is accurate to a certain point only. Although mugham does allow for a wide margin of interpretation, an equation with jazz is oversimplified, since it fails to account for the different kinds of improvisation for different Mugham modes. The performance of a certain mugham may last for hours. (For the uninitiated listener it is close to impossible to know whether a musician is actually improvising or playing a prearranged composition.) Furthermore, as Garayev stresses, mugham music has a symphonic character. The songs are often based on the medieval and modern poetry of Azerbaijan, and although love is a common topic in these poems, to the uninitiated ear many of the intricacies and allusions are lost. For one, the poems do not primarily deal with worldly love but with the mystical love for god. Yet, strictly speaking, this is still secular music/poetry, as opposed to, say, Sufism. Nevertheless, mugham composition is designed very similarly to Sufism in that it seeks to achieve ascension from a lower level of awareness to a transcendental union with god. It is a spiritual search for god. Derivatives and offshoots Jazz mugham The famous Azerbaijani jazz musician Vagif Mustafazadeh, who died in 1979, is credited with fusing jazz with mugham. Jazz mugham is jazz based on the modal forms or scales of mughams, just as a mugham symphonies are symphonies based on mughams. Ordinary jazz