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 Confessor (Conf. Bishop) 3Iste Confessor (Conf. Bishop) 3
  2. 🔍 81% Iste Confessorum Domini (in Feriis tertiis)Iste Confessorum Domini (in Feriis tertiis)
  3. 🔍 76% Iste Confessor (Conf. not Bishop) 8Iste Confessor (Conf. not Bishop) 8
  4. 🔍 72% Iste Confessor (Conf. Bishop) 4Iste Confessor (Conf. Bishop) 4
  5. 🔍 71% Iste Confessor (Conf. Bishop) 1Iste Confessor (Conf. Bishop) 1
  6. 🔍 69% Iste Confessor (Conf. not Bishop) 5Iste Confessor (Conf. not Bishop) 5
  7. 🔍 68% Iste Confessor (Conf. Bishop)Iste Confessor (Conf. Bishop)
  8. 🔍 67% Iste Confessor (Conf. Bishop) (another chant) (2)Iste Confessor (Conf. Bishop) (another chant) (2)
  9. 🔍 65% Iste Confessor (Conf. not Bishop)Iste Confessor (Conf. not Bishop)
  10. 🔍 65% Iste Confessor (Conf. Bishop) 2Iste Confessor (Conf. Bishop) 2
  11. 🔍 65% Iste Confessor (Conf. Bishop) (another chant)Iste Confessor (Conf. Bishop) (another chant)
  12. 🔍 63% Iste Confessorum Domini (Stig. Francisci)Iste Confessorum Domini (Stig. Francisci)
  13. 🔍 62% Iste Confessor (Impr. Stigmatum)Iste Confessor (Impr. Stigmatum)
  14. 🔍 62% Iste Confessorum Domini (in Dominicis)Iste Confessorum Domini (in Dominicis)
  15. 🔍 61% Iste Confessorum Domini (in Feriis secundis)Iste Confessorum Domini (in Feriis secundis)
  16. 🔍 55% Iste Confessorum Domini (in Feriis quartis)Iste Confessorum Domini (in Feriis quartis)
  17. 🔍 53% Iste Confessorum Domini (in Feriis quintis)Iste Confessorum Domini (in Feriis quintis)
  18. 🔍 52% Iste Confessorum Domini (ad libitum)Iste Confessorum Domini (ad libitum)
  19. 🔍 51% Iste Confessor (Conf. not Bishop) 7Iste Confessor (Conf. not Bishop) 7
  20. 🔍 46% Iste confessor (III)Iste confessor (III)
  21. 🔍 45% Christe pastorumChriste pastorum
  22. 🔍 44% Iste Confessor (Conf Pont in Duplicibus Minoribus)Iste Confessor (Conf Pont in Duplicibus Minoribus)
  23. 🔍 43% Iste Confessor (Conf Pont in Duplicibus Majoribus)Iste Confessor (Conf Pont in Duplicibus Majoribus)
  24. 🔍 43% Iste Confessor (Pro Doctoribus)Iste Confessor (Pro Doctoribus)
  25. 🔍 42% Iste Confessorum Domini (in Sabbato)Iste Confessorum Domini (in Sabbato)
  26. 🔍 42% Iste Confessor (Conf. not Bishop) (another chant)Iste Confessor (Conf. not Bishop) (another chant)
  27. 🔍 41% Iste Confessor (Conf. not Bishop) 6Iste Confessor (Conf. not Bishop) 6
  28. 🔍 41% Quod chorus vatumQuod chorus vatum
  29. 🔍 41% Iste confessor (II)Iste confessor (II)
  30. 🔍 40% Summae Deus (in festo SS. Trinitatis)Summae Deus (in festo SS. Trinitatis)
  31. 🔍 40% Tu Trinitatis UnitasTu Trinitatis Unitas
  32. 🔍 40% Tu Trinitatis UnitasTu Trinitatis Unitas
  33. 🔍 40% Iste Confessorum Domini (in Feriis sextis)Iste Confessorum Domini (in Feriis sextis)
  34. 🔍 39% Tu Trinitatis unitasTu Trinitatis unitas
  35. 🔍 38% O lux beata Trinitas (aestivalis)O lux beata Trinitas (aestivalis)
  36. 🔍 38% O castitatis signiferO castitatis signifer
  37. 🔍 38% Ad te levaviAd te levavi
  38. 🔍 38% Jam sol receditJam sol recedit
  39. 🔍 38% Immensa et unaImmensa et una
  40. 🔍 37% Jam sol receditJam sol recedit
  41. 🔍 37% O lux beata Trinitas (aestivalis)O lux beata Trinitas (aestivalis)
  42. 🔍 37% Miserere mei... secundumMiserere mei... secundum
  43. 🔍 37% Iste confessor (I)Iste confessor (I)
  44. 🔍 36% Jam sol recedit igneusJam sol recedit igneus
  45. 🔍 36% Virginis ProlesVirginis Proles
  46. 🔍 36% Virginis Proles (pro virgine et martyre)Virginis Proles (pro virgine et martyre)
  47. 🔍 36% Summae Parens clementiaeSummae Parens clementiae
  48. 🔍 36% O lux beata TrinitasO lux beata Trinitas
  49. 🔍 35% O lux beata TrinitasO lux beata Trinitas
  50. 🔍 35% Martyr Dei qui unicumMartyr Dei qui unicum
  51. 🔍 35% Jam sol recedit igneus (Blessed Trinity)Jam sol recedit igneus (Blessed Trinity)
  52. 🔍 34% Martyr Dei, qui unicumMartyr Dei, qui unicum
  53. 🔍 34% Gaudeamus... Mariae... NativitateGaudeamus... Mariae... Nativitate
  54. 🔍 34% Gaudeamus... Mariae... MaternitateGaudeamus... Mariae... Maternitate
  55. 🔍 33% Domine Deus salutisDomine Deus salutis
  56. 🔍 33% Laetare caelum desuperLaetare caelum desuper
  57. 🔍 33% Audit tyrannus anxiusAudit tyrannus anxius
  58. 🔍 33% Populus SionPopulus Sion
  59. 🔍 33% Domine Deus salutisDomine Deus salutis
  60. 🔍 33% Venite exultemus IV GVenite exultemus IV G
  61. 🔍 33% Gaudeamus... Mariae...festivitate (sine Alleluia)Gaudeamus... Mariae...festivitate (sine Alleluia)
  62. 🔍 33% ExsurgeExsurge
  63. 🔍 33% Invicte Martyr unicumInvicte Martyr unicum
  64. 🔍 33% Quodcumque in orbeQuodcumque in orbe
  65. 🔍 32% Regali solio fortisRegali solio fortis