johtosäveliltä
Johtosäveliltä is a Finnish term that translates loosely to "from the lead melody" or "from the main theme." It is often used in discussions of music, particularly in relation to composition, arrangement, or improvisation. The concept refers to the derivation of other musical elements from a principal melodic line. This can encompass the creation of harmonies, countermelodies, rhythmic patterns, or even larger structural ideas that are all fundamentally linked to the initial guiding melody.
When a composer or improviser works "johtosäveliltä," they are essentially using the main melody as a source