Speigel im speigel for 12 str matched reciprocal
Speigel im speigel by the composer arvo part for 12 str matched reciprocal.
the piece is like 14 or so different arpeggios that are strung together in different ascending or descending sequences, so once you learn the 14 arpeggios it's downhill from there
https://musescore.com/user/30359691/scores/10748602the tempo can be dialed down depending on your mood