Apostolo Kalt Orchestra

Emotional Algebra is the third personal album of Greek bassist ,composer and arranger Apostolo Kalt (aka Apostolos Kaltsas) and his side project group Apostolo Kalt Orchestra. Whereas in his previous , critically acclaimed works (“Mythotopia”, “Mikrogeios”) he focusses on his songwriting skills , in Emotional Algebra he explores his secret passion for jazz and musical improvisation . Emotional Algebra consists of 6 long instrumental tracks whose style ranges from ambient soundscapes and nostalgic,mediterranean-flavoured melodies to oriental motifs and pure world jazz grooves!His bandmates ,Yiannis Papadopoulos on piano , Dimitris Papadopoulos on trumpet , Yannis Papanastasiou on saxes and Panos Tziniolis on drums are considered to be among the top musicians in contemporary greek jazz scene .Special guests Aggeliki Toubanaki and Nadi Raj feature on vocals . 
Algebra (from Arabic: الجبر‎ (al-jabr, meaning "reunion of broken parts")is one of the broad parts of mathematics, with number theory, geometry and analysis. In its most general form, algebra is the study of mathematical symbols and the rules for manipulating these symbols, it is a unifying thread of almost all of mathematics.

These pieces have been composed with the logic of a mathematical formula that puts forward a problem and at the same time leads to its resolution. Since mathematics is music and music is mathematics, a particular progression of chords or a sequence of notes that form a melody could potentially give birth and liberate a pure emotion!  a mathematician friend once quoted ‘The emotion is the quotient of time via corrosion’. The more the corrosion is mitigated the more intense the emotion becomes .When corrosion is getting eliminated the emotion acquirers an absolute, divine dimension . Conversely, the smaller the quotient gets , the  more negative the emotion becomes.