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: 2025-12-19. 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 Confessorum Domini (in Feriis quartis)Iste Confessorum Domini (in Feriis quartis)
  2. 🔍 76% Iste Confessorum Domini (ad libitum)Iste Confessorum Domini (ad libitum)
  3. 🔍 72% Iste Confessorum Domini (in Feriis tertiis)Iste Confessorum Domini (in Feriis tertiis)
  4. 🔍 71% Iste Confessorum Domini (in Feriis quintis)Iste Confessorum Domini (in Feriis quintis)
  5. 🔍 67% Iste Confessorum Domini (in Feriis secundis)Iste Confessorum Domini (in Feriis secundis)
  6. 🔍 65% Iste Confessorum Domini (Stig. Francisci)Iste Confessorum Domini (Stig. Francisci)
  7. 🔍 64% Iste Confessor (Conf. Bishop) 4Iste Confessor (Conf. Bishop) 4
  8. 🔍 63% Iste Confessorum Domini (in Dominicis)Iste Confessorum Domini (in Dominicis)
  9. 🔍 62% Iste Confessor (Conf. Bishop) (another chant) (2)Iste Confessor (Conf. Bishop) (another chant) (2)
  10. 🔍 61% Iste Confessor (Conf. not Bishop) 8Iste Confessor (Conf. not Bishop) 8
  11. 🔍 57% Iste Confessorum Domini (in Feriis sextis)Iste Confessorum Domini (in Feriis sextis)
  12. 🔍 55% Iste Confessorum Domini (in Sabbato)Iste Confessorum Domini (in Sabbato)
  13. 🔍 55% Iste Confessor (Conf. Bishop) 3Iste Confessor (Conf. Bishop) 3
  14. 🔍 54% Iste Confessor (Conf. not Bishop) 5Iste Confessor (Conf. not Bishop) 5
  15. 🔍 54% Iste Confessor (Conf. not Bishop)Iste Confessor (Conf. not Bishop)
  16. 🔍 53% Iste Confessor (Conf. Bishop) 1Iste Confessor (Conf. Bishop) 1
  17. 🔍 53% Iste Confessor (Impr. Stigmatum)Iste Confessor (Impr. Stigmatum)
  18. 🔍 52% Iste Confessor (Conf. Bishop)Iste Confessor (Conf. Bishop)
  19. 🔍 51% Iste Confessor (Conf. Bishop) 2Iste Confessor (Conf. Bishop) 2
  20. 🔍 50% Iste Confessor (Conf. Bishop) (another chant)Iste Confessor (Conf. Bishop) (another chant)
  21. 🔍 46% Iste Confessor (Conf Pont in Duplicibus Majoribus)Iste Confessor (Conf Pont in Duplicibus Majoribus)
  22. 🔍 44% Iste Confessor (Conf. not Bishop) 7Iste Confessor (Conf. not Bishop) 7
  23. 🔍 40% Iste Confessor (Conf Pont in Duplicibus Minoribus)Iste Confessor (Conf Pont in Duplicibus Minoribus)
  24. 🔍 39% Iste Confessor (Conf. not Bishop) (another chant)Iste Confessor (Conf. not Bishop) (another chant)
  25. 🔍 39% Iste Confessor (Conf. not Bishop) 6Iste Confessor (Conf. not Bishop) 6
  26. 🔍 39% Iste confessor (III)Iste confessor (III)
  27. 🔍 38% Iste confessor (II)Iste confessor (II)
  28. 🔍 35% Iste Confessor (Pro Doctoribus)Iste Confessor (Pro Doctoribus)
  29. 🔍 32% Iste confessor (I)Iste confessor (I)
  30. 🔍 30% Inclytos ChristiInclytos Christi
  31. 🔍 29% 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)
  32. 🔍 29% Iste ConfessorIste Confessor
  33. 🔍 28% Adoro te devoteAdoro te devote
  34. 🔍 27% Iste Confessor Domini [S Martini]Iste Confessor Domini [S Martini]
  35. 🔍 27% Iste Confessor (Conf non Pont in Duplicibus Minoribus)Iste Confessor (Conf non Pont in Duplicibus Minoribus)
  36. 🔍 27% Roma Petro GlorieturRoma Petro Glorietur
  37. 🔍 27% Iste confessor (IIa)Iste confessor (IIa)
  38. 🔍 27% Commune vos apostoliCommune vos apostoli
  39. 🔍 27% Cohors beata SeraphimCohors beata Seraphim
  40. 🔍 27% Exsultet caelum laudibus (modus 4)Exsultet caelum laudibus (modus 4)
  41. 🔍 27% Caelitum IosephCaelitum Ioseph
  42. 🔍 26% Exsultet jam AngelicaExsultet jam Angelica
  43. 🔍 26% Virgo quae nostrisVirgo quae nostris
  44. 🔍 26% Qui luce splendesQui luce splendes
  45. 🔍 26% Coelitum JosephCoelitum Joseph
  46. 🔍 26% Te nostra laetisTe nostra laetis
  47. 🔍 26% Passio DNJC secundum MatthaeumPassio DNJC secundum Matthaeum
  48. 🔍 26% Passio DNJC secundum LucamPassio DNJC secundum Lucam
  49. 🔍 25% Caelitum Joseph decusCaelitum Joseph decus
  50. 🔍 25% Apostolorum passio diemApostolorum passio diem
  51. 🔍 25% Qui luce splendesQui luce splendes
  52. 🔍 25% Splendor paternae gloriae (in Aestate)Splendor paternae gloriae (in Aestate)
  53. 🔍 25% Passio DNJC secundum MarcumPassio DNJC secundum Marcum
  54. 🔍 25% Caelitum Joseph decusCaelitum Joseph decus
  55. 🔍 25% Passio DNJC secundum MatthaeumPassio DNJC secundum Matthaeum
  56. 🔍 25% Relucens inter principesRelucens inter principes
  57. 🔍 25% Exsultet iam angelicaExsultet iam angelica
  58. 🔍 25% Te beata sponsa ChristiTe beata sponsa Christi
  59. 🔍 25% Commune vos apostoliCommune vos apostoli
  60. 🔍 25% Rector ætérniRector ætérni
  61. 🔍 25% Passio Domini nostri Jesu Christi secundum Lucam - ANNO CPassio Domini nostri Jesu Christi secundum Lucam - ANNO C
  62. 🔍 24% Hodie sanctus MaurusHodie sanctus Maurus
  63. 🔍 24% Legis sacrataeLegis sacratae
  64. 🔍 24% Praeclara qua tu gloriaPraeclara qua tu gloria
  65. 🔍 24% Splendor paternaeSplendor paternae