Ivan Kapec 5tet - Interlocari (2024) [Hi-Res]

The album Interlocari by the Ivan Kapec Quintet is inspired by Johannes Kepler's astronomical work Mysterium Cosmographicum, first published in 1596. In this work, Kepler discusses the proportional relationships between the orbits of planets within the heliocentric system. Kepler's theory is based on regular geometric polyhedra, which are placed (interlocari) between the orbits of planets, creating mathematically defined relationships that describe the solar system, as Kepler succinctly explains in his work:

"Earth is the circle, the measure of all things. Around it, describe a dodecahedron: the circle surrounding it will be Mars. Around Mars, describe a tetrahedron: the circle surrounding it will be Jupiter. Around Jupiter, describe a cube: the circle surrounding it will be Saturn. Around Earth, inscribe an icosahedron: the circle surrounding it will be Venus. Around Venus, inscribe an octahedron: the circle surrounding it will be Mercury. Thus, you have the ratio of the number of planets." (Mysterium Cosmographicum, 1596.)

Kapec has translated these ratios into jazz compositions, exploring how these proportional relationships can shape musical structures.

In Interlocari, Kapec uses Kepler’s mathematical ratios and the structures of polyhedra to create complex musical compositions in a jazz format. The numbers of beats, harmonic rhythms, and metric organization of the pieces are directly connected to Kepler's ideas about the proportions of the universe, creating a unique connection between musical and scientific thought.

The album's title, Interlocari, derives from the Latin word meaning "to place between," referring to the polyhedra positioned between planetary orbits according to Kepler’s concept.

The album cover features Kepler's autograph letter to his teacher Michael Maestlin, in which he explains his revolutionary ideas about the geometry of the universe, expressed through polyhedra.

Ivan Kapec - baritone and standard guitar
Mario Bočić - tenor saxophone
Šimun Matišić - vibrophone
Hrvoje Kralj - double bass
Borko Rupena - drums

All compositions by Ivan Kapec