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% Decus morumDecus morum
  2. 🔍 60% Bernardinum qui divinum.Bernardinum qui divinum.
  3. 🔍 49% Beata nobisBeata nobis
  4. 🔍 45% Impleta gaudentImpleta gaudent
  5. 🔍 41% Aeterne rerum Conditor (Dox. Deo Patri)Aeterne rerum Conditor (Dox. Deo Patri)
  6. 🔍 41% Aeterne lucis conditorAeterne lucis conditor
  7. 🔍 40% Splendor paternae gloriae (in Aestate)Splendor paternae gloriae (in Aestate)
  8. 🔍 39% Aeterna caeli gloria (in Aestate)Aeterna caeli gloria (in Aestate)
  9. 🔍 39% Aeterna caeli gloria (aestivalis)Aeterna caeli gloria (aestivalis)
  10. 🔍 39% Praefatio solemnior de S. BenedictoPraefatio solemnior de S. Benedicto
  11. 🔍 39% Praefatio solemnior de beata Maria VirginePraefatio solemnior de beata Maria Virgine
  12. 🔍 39% Praefatio solemnior de MartyribusPraefatio solemnior de Martyribus
  13. 🔍 39% Eterne rerumEterne rerum
  14. 🔍 39% Fulgentis auctor aetherisFulgentis auctor aetheris
  15. 🔍 38% Praefatio solemnior de nuptiisPraefatio solemnior de nuptiis
  16. 🔍 38% Praefatio solemnior de sancto Ioseph Sponso B. M. V.Praefatio solemnior de sancto Ioseph Sponso B. M. V.
  17. 🔍 38% Incipit Oratio Jeremiae Prophetae (ad libitum)Incipit Oratio Jeremiae Prophetae (ad libitum)
  18. 🔍 37% Eripe meEripe me
  19. 🔍 37% Praefatio solemnior de Spiritu SanctoPraefatio solemnior de Spiritu Sancto
  20. 🔍 37% Lauda Mater... laudaLauda Mater... lauda
  21. 🔍 37% Splendor paternae gloriaeSplendor paternae gloriae
  22. 🔍 37% Praefatio solemnior de Omnibus Sanctis et PatronisPraefatio solemnior de Omnibus Sanctis et Patronis
  23. 🔍 37% Praefatio solemnior de sancta CrucePraefatio solemnior de sancta Cruce
  24. 🔍 37% Praefatio solemnior de sanctissima TrinitatePraefatio solemnior de sanctissima Trinitate
  25. 🔍 37% Praefatio solemnior de Ecclesiae DedicationePraefatio solemnior de Ecclesiae Dedicatione
  26. 🔍 37% Exsultet jam AngelicaExsultet jam Angelica
  27. 🔍 37% Praefatio solemnior de sancto Ioanne BaptistaPraefatio solemnior de sancto Ioanne Baptista
  28. 🔍 37% Splendor paternaeSplendor paternae
  29. 🔍 37% O vos unanimesO vos unanimes
  30. 🔍 37% Emendemus in meliusEmendemus in melius
  31. 🔍 36% Praefatio solemnior de AngelisPraefatio solemnior de Angelis
  32. 🔍 36% Ex quo religioEx quo religio
  33. 🔍 36% Ales diei nuntius (aestivalis)Ales diei nuntius (aestivalis)
  34. 🔍 36% Nox et tenebrae (in Aestate)Nox et tenebrae (in Aestate)
  35. 🔍 36% Praefatio solemnior de sancto Joanne BaptistaPraefatio solemnior de sancto Joanne Baptista
  36. 🔍 36% Venite exsultemus DominoVenite exsultemus Domino
  37. 🔍 36% ObtuleruntObtulerunt
  38. 🔍 36% Nox et tenebraeNox et tenebrae
  39. 🔍 36% Praefatio solemnior communisPraefatio solemnior communis
  40. 🔍 35% Aeterna caeli gloriaAeterna caeli gloria
  41. 🔍 35% Praefatio solemnior de QuadragesimaPraefatio solemnior de Quadragesima
  42. 🔍 35% Sanctorum meritisSanctorum meritis
  43. 🔍 35% In Francisci filioIn Francisci filio
  44. 🔍 35% Praefatio solemnior de Nativitate DominiPraefatio solemnior de Nativitate Domini
  45. 🔍 35% Ave Maria (Alleluia)Ave Maria (Alleluia)
  46. 🔍 35% Ales diei nuntiusAles diei nuntius
  47. 🔍 35% Adesto rerum conditorAdesto rerum conditor
  48. 🔍 34% Praefatio solemnior de AdventuPraefatio solemnior de Adventu
  49. 🔍 34% Lux ecce surgit (in Aestate)Lux ecce surgit (in Aestate)
  50. 🔍 34% Memento meiMemento mei
  51. 🔍 34% Praefatio solemnior de D. N. Iesu Christo RegePraefatio solemnior de D. N. Iesu Christo Rege
  52. 🔍 34% Lucis LargitorLucis Largitor
  53. 🔍 34% Praefatio solemnior PaschalisPraefatio solemnior Paschalis
  54. 🔍 34% Praefatio solemnior de sacratissimo Corde IesuPraefatio solemnior de sacratissimo Corde Iesu
  55. 🔍 33% Praefatio solemnior de sanctissima EucharistiaPraefatio solemnior de sanctissima Eucharistia
  56. 🔍 33% Ales diei nuntiusAles diei nuntius
  57. 🔍 33% EmendemusEmendemus
  58. 🔍 33% Aurora Jam Spargit Polum (aestivalis)Aurora Jam Spargit Polum (aestivalis)
  59. 🔍 33% Mater ChristiMater Christi
  60. 🔍 33% Praefatio solemnior de Ascensione DominiPraefatio solemnior de Ascensione Domini
  61. 🔍 33% Praefatio solemnior de ApostolisPraefatio solemnior de Apostolis
  62. 🔍 33% Rerum Deus (In Adventu)Rerum Deus (In Adventu)
  63. 🔍 33% Praefatio solemnior de Epiphania DominiPraefatio solemnior de Epiphania Domini
  64. 🔍 32% Jam Christus astraJam Christus astra
  65. 🔍 32% Post Petrum primumPost Petrum primum