| Author |  
   Textbook |  
   Language |  
   Number of pages |  
   Difficulty (1=beginner, 5=advanced) |  
   Presentation of theory (1=the worst; 5=the best) |  
   Exercises for practice (1=the worst; 5=the best) |  
  
 
   
   | Franz Josef Stoiber |  
   Faszination Orgelimprovisation  |  
   German, English |  
   152 |  
   1, 2, 3, 4, 5 |  
   5 |  
   4 |  
  
 
   
   | Jan Steyer |  
   Učebnice improvizace pro chrámové varhaníky |  
   Czech |  
   93 |  
   1, 2, 3 |  
   5 |  
   5 |  
  
 
   
   | Jan Overduin |  
   Making Music: Improvisation for organists |  
   English |  
   223 |  
   1, 2, 3, 4 |  
   4 |  
   4 |  
  
 
   
   | Lionel Rogg |  
   Cours d´improvisation Modale ou libre pour pour les organistes |  
   French |  
   106 |  
   1, 2, 3, 4, 5 |  
   2 |  
   5 |  
  
 
   
   | Lionel Rogg |  
   Cours d´improvisation pour les organistes |  
   French, English |  
   60 |  
   2, 3, 4 |  
   2 |  
   5 |  
  
 
   
   | Bohumír Kratochvíl |  
   Učebnice varhanní improvizace - liturgická praxe |  
   Czech |  
   144 |  
   3, 4, 5 |  
   3 |  
   2 |  
  
 
   
   | Reiner Gaar |  
   Orgelimprovisation Lehrplan und Arbeitshifen |  
   German |  
   183 |  
   3, 4, 5 |  
   4 |  
   3 |  
  
 
   
   | Marcel Dupré |  
   Cours Complet d´Improvisation á l´Orgue. Vol 1 + Vol. 2 |  
   French, English |  
   62 + 148 |  
   3, 4, 5 |  
   4 |  
   4 |  
  
 
   
   | Jaroslav Vodrážka |  
   Varhanní improvizace |  
   Czech, German, English |  
   74 |  
   3, 4 |  
   2 |  
   3 |  
  
 
   
   | Hermann Keller |  
   Schule der Choralimprovisation |  
   German, English |  
   75 |  
   3, 4 |  
   3 |  
   3 |