IsoGrego

Find the top n Gregorian chants most similar to a given one, sorted by cosine TF-IDF similarity of the GABC files.

Last sync with GregoBase: 2025-12-20. Max GregoBase ID: 20393.

🎩 tip: "How to compute the similarity between two text documents?" StackOverflow question. Originally inspired by "examples of same setting, different texts?" MusicaSacra forum thread. See the source code on GitHub.

See, e.g.: 1961 Solesmes Liber Usualis

Click on the chant name to expand/contract the collapsible. Click the chant image to open it up in GregoBase. Click the 🔍 to find similarities to the given chant.

  1. 🔍 100% Iste confessorIste confessor
  2. 🔍 100% Iste confessorIste confessor
  3. 🔍 29% Iste confessor (IIa)Iste confessor (IIa)
  4. 🔍 23% Iste pauperIste pauper
  5. 🔍 19% Iste puer magnusIste puer magnus
  6. 🔍 19% Iste puerIste puer
  7. 🔍 18% Iste puer magnusIste puer magnus
  8. 🔍 16% Iste puer magnusIste puer magnus
  9. 🔍 16% Sanctissime Confessor DominiSanctissime Confessor Domini
  10. 🔍 16% Quis est isteQuis est iste
  11. 🔍 16% Iste est Ioannes cui ChristusIste est Ioannes cui Christus
  12. 🔍 16% Iste Confessor (Conf. not Bishop) 8Iste Confessor (Conf. not Bishop) 8
  13. 🔍 15% Quis est iste qui venitQuis est iste qui venit
  14. 🔍 15% Gloriosus Confessor Domini Benedictus (modus 8c)Gloriosus Confessor Domini Benedictus (modus 8c)
  15. 🔍 15% Iste est JoannesIste est Joannes
  16. 🔍 15% Locus isteLocus iste
  17. 🔍 15% Quis est isteQuis est iste
  18. 🔍 15% Quis est isteQuis est iste
  19. 🔍 14% Gloriosus Confessor Domini Benedictus (modus 8c)Gloriosus Confessor Domini Benedictus (modus 8c)
  20. 🔍 14% Homo isteHomo iste
  21. 🔍 14% Iste est JoannesIste est Joannes
  22. 🔍 14% Nonne isteNonne iste
  23. 🔍 14% Domine iste SanctusDomine iste Sanctus
  24. 🔍 14% Beatus iste SanctusBeatus iste Sanctus
  25. 🔍 14% Iste quem laetiIste quem laeti
  26. 🔍 14% Iste sanctusIste sanctus
  27. 🔍 14% Iste Confessor (Impr. Stigmatum)Iste Confessor (Impr. Stigmatum)
  28. 🔍 14% Iste est JoannesIste est Joannes
  29. 🔍 13% Iste sanctusIste sanctus
  30. 🔍 13% Iste Confessor (Conf. not Bishop)Iste Confessor (Conf. not Bishop)
  31. 🔍 13% Locus iste (Paschal Time)Locus iste (Paschal Time)
  32. 🔍 13% Gloriosus Confessor Domini Benedictus (modus 8g)Gloriosus Confessor Domini Benedictus (modus 8g)
  33. 🔍 13% Iste est JoannesIste est Joannes
  34. 🔍 13% Iste Confessor (Conf. Bishop) (another chant) (2)Iste Confessor (Conf. Bishop) (another chant) (2)
  35. 🔍 12% Iste confessor (II)Iste confessor (II)
  36. 🔍 12% Iste Confessor (Conf. Bishop)Iste Confessor (Conf. Bishop)
  37. 🔍 12% Iste Confessor (Conf Pont in Duplicibus Minoribus)Iste Confessor (Conf Pont in Duplicibus Minoribus)
  38. 🔍 12% Iste confessor (III)Iste confessor (III)
  39. 🔍 12% Iste Sanctus pro legeIste Sanctus pro lege
  40. 🔍 12% Iste Sanctus pro legeIste Sanctus pro lege
  41. 🔍 12% Iste Sanctus pro legeIste Sanctus pro lege
  42. 🔍 12% ConfessorConfessor
  43. 🔍 12% Iste Confessor (Conf Pont in Duplicibus Majoribus)Iste Confessor (Conf Pont in Duplicibus Majoribus)
  44. 🔍 12% Iste Confessor (Conf. Bishop) 2Iste Confessor (Conf. Bishop) 2
  45. 🔍 12% Iste Confessor (Conf. Bishop) (another chant)Iste Confessor (Conf. Bishop) (another chant)
  46. 🔍 11% Iste Confessor (Pro Doctoribus)Iste Confessor (Pro Doctoribus)
  47. 🔍 11% Iste Confessor (Conf. not Bishop) 5Iste Confessor (Conf. not Bishop) 5
  48. 🔍 11% Iste Confessor (Conf. Bishop) 4Iste Confessor (Conf. Bishop) 4
  49. 🔍 11% Iste Confessor (Conf. not Bishop) 7Iste Confessor (Conf. not Bishop) 7
  50. 🔍 11% Iste Confessor (Conf. Bishop) 3Iste Confessor (Conf. Bishop) 3
  51. 🔍 10% Iste est qui pro legeIste est qui pro lege
  52. 🔍 10% Iste Confessor (Conf. Bishop) 1Iste Confessor (Conf. Bishop) 1
  53. 🔍 10%
  54. 🔍 10%
  55. 🔍 10%
  56. 🔍 10%
  57. 🔍 10%
  58. 🔍 10% Iste Confessor (Conf non Pont in Duplicibus Minoribus)Iste Confessor (Conf non Pont in Duplicibus Minoribus)
  59. 🔍 10% Iste Confessor (Conf non Pont in Duplicibus Minoribus) (Si non est dies obitus)Iste Confessor (Conf non Pont in Duplicibus Minoribus) (Si non est dies obitus)
  60. 🔍 10% Iste confessor (I)Iste confessor (I)
  61. 🔍 10% Iste Confessor patriarchaIste Confessor patriarcha
  62. 🔍 8% Locus isteLocus iste
  63. 🔍 8% Locus isteLocus iste
  64. 🔍 8% Iste est Joannes (w/o Gloria Patri)Iste est Joannes (w/o Gloria Patri)
  65. 🔍 8% Iste ConfessorIste Confessor