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 Confessor (Conf. not Bishop)Iste Confessor (Conf. not Bishop)
  2. 🔍 96% Iste Confessor (Conf. not Bishop) 5Iste Confessor (Conf. not Bishop) 5
  3. 🔍 93% Iste Confessor (Impr. Stigmatum)Iste Confessor (Impr. Stigmatum)
  4. 🔍 79% Iste Confessor (Conf. not Bishop) 8Iste Confessor (Conf. not Bishop) 8
  5. 🔍 77% Iste Confessor (Conf. Bishop)Iste Confessor (Conf. Bishop)
  6. 🔍 75% Iste Confessor (Conf. Bishop) 1Iste Confessor (Conf. Bishop) 1
  7. 🔍 71% Iste Confessor (Conf. Bishop) (another chant) (2)Iste Confessor (Conf. Bishop) (another chant) (2)
  8. 🔍 71% Iste Confessorum Domini (in Feriis quintis)Iste Confessorum Domini (in Feriis quintis)
  9. 🔍 69% Iste Confessor (Conf. Bishop) 4Iste Confessor (Conf. Bishop) 4
  10. 🔍 68% Iste Confessorum Domini (Stig. Francisci)Iste Confessorum Domini (Stig. Francisci)
  11. 🔍 68% Iste Confessor (Conf. Bishop) (another chant)Iste Confessor (Conf. Bishop) (another chant)
  12. 🔍 67% Iste Confessorum Domini (in Dominicis)Iste Confessorum Domini (in Dominicis)
  13. 🔍 66% Iste Confessor (Conf. Bishop) 2Iste Confessor (Conf. Bishop) 2
  14. 🔍 65% Iste Confessor (Conf. Bishop) 3Iste Confessor (Conf. Bishop) 3
  15. 🔍 60% Iste Confessorum Domini (in Feriis secundis)Iste Confessorum Domini (in Feriis secundis)
  16. 🔍 59% Iste Confessor (Conf. not Bishop) 7Iste Confessor (Conf. not Bishop) 7
  17. 🔍 56% Iste Confessorum Domini (in Feriis tertiis)Iste Confessorum Domini (in Feriis tertiis)
  18. 🔍 55% Iste Confessorum Domini (ad libitum)Iste Confessorum Domini (ad libitum)
  19. 🔍 54% Iste Confessorum Domini (in Feriis quartis)Iste Confessorum Domini (in Feriis quartis)
  20. 🔍 49% Iste Confessor (Conf Pont in Duplicibus Minoribus)Iste Confessor (Conf Pont in Duplicibus Minoribus)
  21. 🔍 48% 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)
  22. 🔍 47% Sic Patres vitamSic Patres vitam
  23. 🔍 46% Iste Confessorum Domini (in Sabbato)Iste Confessorum Domini (in Sabbato)
  24. 🔍 46% Iste Confessor (Conf. not Bishop) (another chant)Iste Confessor (Conf. not Bishop) (another chant)
  25. 🔍 45% Iste Confessor (Conf non Pont in Duplicibus Minoribus)Iste Confessor (Conf non Pont in Duplicibus Minoribus)
  26. 🔍 44% Iste Confessor (Conf. not Bishop) 6Iste Confessor (Conf. not Bishop) 6
  27. 🔍 43% Iste confessor (II)Iste confessor (II)
  28. 🔍 42% Iste Confessor (Pro Doctoribus)Iste Confessor (Pro Doctoribus)
  29. 🔍 42% Iste Confessorum Domini (in Feriis sextis)Iste Confessorum Domini (in Feriis sextis)
  30. 🔍 41% Iste confessor (III)Iste confessor (III)
  31. 🔍 40% Iste Confessor (Conf Pont in Duplicibus Majoribus)Iste Confessor (Conf Pont in Duplicibus Majoribus)
  32. 🔍 38% Inclytos ChristiInclytos Christi
  33. 🔍 37% Mente jucundaMente jucunda
  34. 🔍 34% Caeli civesCaeli cives
  35. 🔍 34% Bella dum lateBella dum late
  36. 🔍 34% Ut queant laxisUt queant laxis
  37. 🔍 33% Iste confessor (I)Iste confessor (I)
  38. 🔍 33% O nimis felixO nimis felix
  39. 🔍 33% Sanctorum meritisSanctorum meritis
  40. 🔍 32% Exsultet jam AngelicaExsultet jam Angelica
  41. 🔍 32% Sanctorum meritis inclyta gaudiaSanctorum meritis inclyta gaudia
  42. 🔍 32% Sanctorum meritis inclyta gaudiaSanctorum meritis inclyta gaudia
  43. 🔍 32% Inclitos ChristiInclitos Christi
  44. 🔍 31% O vos unanimesO vos unanimes
  45. 🔍 31% Iste confessor (IIa)Iste confessor (IIa)
  46. 🔍 31% Virgo quae nostrisVirgo quae nostris
  47. 🔍 31% Inclitus pastorInclitus pastor
  48. 🔍 31% Gloria XIGloria XI
  49. 🔍 31% Non illam cruciansNon illam crucians
  50. 🔍 31% Auctor salutisAuctor salutis
  51. 🔍 31% Te Deum (sec. mor. Rom.)Te Deum (sec. mor. Rom.)
  52. 🔍 31% Auctor salutis uniceAuctor salutis unice
  53. 🔍 30% Dum tuos omnes!Dum tuos omnes!
  54. 🔍 30% Grande RaymundiGrande Raymundi
  55. 🔍 30% O gente felix hospitaO gente felix hospita
  56. 🔍 30% O lux beata CaelitumO lux beata Caelitum
  57. 🔍 30% Tu natale solum protegeTu natale solum protege
  58. 🔍 30% O Redemptor O Redemptor
  59. 🔍 30% Gloria IGloria I
  60. 🔍 30% Te Deum (sec. mor. Rom)Te Deum (sec. mor. Rom)
  61. 🔍 30% Inclytos ChristiInclytos Christi
  62. 🔍 29% Beata caeli regiaBeata caeli regia
  63. 🔍 29% O lux beata CaelitumO lux beata Caelitum
  64. 🔍 29% Exsultet iam angelicaExsultet iam angelica
  65. 🔍 29% Iste ConfessorIste Confessor