Around 1800, a mutual interchange between the mandora and the guitar took place. The guitar, which had so far been tuned in re-entrant tuning (e' - b - g - d' - a), took over the 6th course and the tuning of the mandora (e' - b - g - d - A - G, later also e' - b - g - d - A - E), whereas the mandora took over the stringing with single strings instead of courses, as had been introduced to the guitar. The so-called wandervogellaute has been a late heir to that development.