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% Lucis Creator optimeLucis Creator optime
  2. 🔍 45% Splendor Paternae gloriaeSplendor Paternae gloriae
  3. 🔍 42% Lucis Creator OptimeLucis Creator Optime
  4. 🔍 40% Rerum Deus (1)Rerum Deus (1)
  5. 🔍 37% Deus Creator omniumDeus Creator omnium
  6. 🔍 36% Lucis Creator optimeLucis Creator optime
  7. 🔍 35% Rector potens verax Deus (1)Rector potens verax Deus (1)
  8. 🔍 35% Rerum Deus (2)Rerum Deus (2)
  9. 🔍 35% Te lucis ante terminum (In Festis et Officiis iij. Lect., in Feriis T. P.)Te lucis ante terminum (In Festis et Officiis iij. Lect., in Feriis T. P.)
  10. 🔍 34% Nunc sancte nobis Spiritus (1)Nunc sancte nobis Spiritus (1)
  11. 🔍 33% Aeterne rerum ConditorAeterne rerum Conditor
  12. 🔍 32% Conditor alme siderumConditor alme siderum
  13. 🔍 32% Ecce iam noctisEcce iam noctis
  14. 🔍 32% Te lucis ante terminum (In Feriis per Annum)Te lucis ante terminum (In Feriis per Annum)
  15. 🔍 32% Rerum Deus (3)Rerum Deus (3)
  16. 🔍 31% Rerum Deus (4)Rerum Deus (4)
  17. 🔍 31% Nocte surgentesNocte surgentes
  18. 🔍 29% Lucis Creator optime (in Hieme)Lucis Creator optime (in Hieme)
  19. 🔍 29% Jam lucis orto (In Feriis per Annum)Jam lucis orto (In Feriis per Annum)
  20. 🔍 28% Lucis Creator optime (Dom. per Annum)Lucis Creator optime (Dom. per Annum)
  21. 🔍 28% Salvete flores MartyrumSalvete flores Martyrum
  22. 🔍 27% Lucis Creator optime (Alius tonus I (ad libitum))Lucis Creator optime (Alius tonus I (ad libitum))
  23. 🔍 27% Verbum supernum prodiens aVerbum supernum prodiens a
  24. 🔍 27% Jam lucis orto (In Festis et Officiis iij. Lectionum, in Feriis T. P.)Jam lucis orto (In Festis et Officiis iij. Lectionum, in Feriis T. P.)
  25. 🔍 27% Jam lucis orto (In Festis MM. min., Dominicis...)Jam lucis orto (In Festis MM. min., Dominicis...)
  26. 🔍 26% Lucis creatorLucis creator
  27. 🔍 26% Rector potens verax Deus (3)Rector potens verax Deus (3)
  28. 🔍 26% Lucis Creator optime (another chant ad libitum)Lucis Creator optime (another chant ad libitum)
  29. 🔍 25% Rector potens verax Deus (2)Rector potens verax Deus (2)
  30. 🔍 25% Lucis Creator optimeLucis Creator optime
  31. 🔍 25% Lucis Creator optime (in Aestate)Lucis Creator optime (in Aestate)
  32. 🔍 25% Nunc sancte nobis Spiritus (3)Nunc sancte nobis Spiritus (3)
  33. 🔍 25% Jam lucis orto (Festis Sermonis, et MM. maj.))Jam lucis orto (Festis Sermonis, et MM. maj.))
  34. 🔍 25% Rector potens verax Deus (4)Rector potens verax Deus (4)
  35. 🔍 25% Lucis Creator optimeLucis Creator optime
  36. 🔍 24% Te lucis ante terminum (In Pentecoste)Te lucis ante terminum (In Pentecoste)
  37. 🔍 24% O quam glorificaO quam glorifica
  38. 🔍 24% Nunc sancte nobis Spiritus (2)Nunc sancte nobis Spiritus (2)
  39. 🔍 24% Vox claraVox clara
  40. 🔍 24% Nunc sancte nobis Spiritus (4)Nunc sancte nobis Spiritus (4)
  41. 🔍 24% Te lucis ante terminumTe lucis ante terminum
  42. 🔍 23% Lucis creatorLucis creator
  43. 🔍 23% Lucis Creator optimeLucis Creator optime
  44. 🔍 23% Hostis Herodes impieHostis Herodes impie
  45. 🔍 23% Lucis Creator optime (Alius tonus II)Lucis Creator optime (Alius tonus II)
  46. 🔍 23% Te lucis ante terminum (In Festo D. N. J. C. Regis)Te lucis ante terminum (In Festo D. N. J. C. Regis)
  47. 🔍 22% Te lucis ante terminum (In Festo Pentecostes)Te lucis ante terminum (In Festo Pentecostes)
  48. 🔍 22% Splendor paternae gloriaeSplendor paternae gloriae
  49. 🔍 21% Lucis Creator optime (another chant)Lucis Creator optime (another chant)
  50. 🔍 21% Audit tyrannus anxiusAudit tyrannus anxius
  51. 🔍 21% Te lucis ante terminum (In Festo Christi Regis)Te lucis ante terminum (In Festo Christi Regis)
  52. 🔍 21% Aeterna Christi muneraAeterna Christi munera
  53. 🔍 21% Te lucis ante terminum (T. Paschali)Te lucis ante terminum (T. Paschali)
  54. 🔍 21% Te lucis ante terminum (Semid.)Te lucis ante terminum (Semid.)
  55. 🔍 21% Te lucis ante terminum (Dom. per annum)Te lucis ante terminum (Dom. per annum)
  56. 🔍 20% Te lucis ante terminum (Pentecost)Te lucis ante terminum (Pentecost)
  57. 🔍 20% Lucis LargitorLucis Largitor
  58. 🔍 20% Te lucis ante terminum (In Adventu)Te lucis ante terminum (In Adventu)
  59. 🔍 20% Ut Antonini gloriamUt Antonini gloriam
  60. 🔍 20% Aeterne lucis conditorAeterne lucis conditor
  61. 🔍 20% Orbis patrator optimeOrbis patrator optime
  62. 🔍 20% Jam Christus astra ascenderatJam Christus astra ascenderat
  63. 🔍 19% Credo in DeumCredo in Deum
  64. 🔍 19% Te lucis ante terminum (Tot. dupl. I Cl.)Te lucis ante terminum (Tot. dupl. I Cl.)
  65. 🔍 19% O quam glorificaO quam glorifica