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% Rector potens(Solemnitatibus)Rector potens(Solemnitatibus)
  2. 🔍 71% Rector potens (Festis Minoribus)Rector potens (Festis Minoribus)
  3. 🔍 66% Rector potens (in Solemnitatibus)Rector potens (in Solemnitatibus)
  4. 🔍 57% Rector potens (soll.)Rector potens (soll.)
  5. 🔍 50% Rector potens (In Festis majoribus)Rector potens (In Festis majoribus)
  6. 🔍 50% Rector potens(In Festis Majoribus)Rector potens(In Festis Majoribus)
  7. 🔍 48% Rector potens verax Deus (In Major. Festis)Rector potens verax Deus (In Major. Festis)
  8. 🔍 48% Rerum Deus (in Solemnitatibus)Rerum Deus (in Solemnitatibus)
  9. 🔍 48% Jam lucis orto sidere (Solemnitatibus)Jam lucis orto sidere (Solemnitatibus)
  10. 🔍 47% Rector potens verax Deus (1)Rector potens verax Deus (1)
  11. 🔍 46% Rector potens (Dom.)Rector potens (Dom.)
  12. 🔍 45% Rerum Deus (In Solemnitatibus)Rerum Deus (In Solemnitatibus)
  13. 🔍 44% Rector potens Fer.Rector potens Fer.
  14. 🔍 44% Rector potens Fer.Rector potens Fer.
  15. 🔍 43% Rector potens verax Deus (2)Rector potens verax Deus (2)
  16. 🔍 43% Rerum, Deus, tenaxRerum, Deus, tenax
  17. 🔍 43% Christo profusum sanguinemChristo profusum sanguinem
  18. 🔍 42% Nunc Sancte nobis (In Solemnitatibus)Nunc Sancte nobis (In Solemnitatibus)
  19. 🔍 40% Rector potens (In Epiphania Domini)Rector potens (In Epiphania Domini)
  20. 🔍 39% Rector potens (In Festis Majoribus)Rector potens (In Festis Majoribus)
  21. 🔍 38% Rector potens (In Tempore Passionis)Rector potens (In Tempore Passionis)
  22. 🔍 38% Rerum Deus (In Solemnitatibus)Rerum Deus (In Solemnitatibus)
  23. 🔍 38% Rector Potens (In Nativitate Domini)Rector Potens (In Nativitate Domini)
  24. 🔍 38% Rector potens (in Feriis per Annum)Rector potens (in Feriis per Annum)
  25. 🔍 37% Rector potens (in Festo Septem Dolorum BMV)Rector potens (in Festo Septem Dolorum BMV)
  26. 🔍 37% Rector potens verax Deus (3)Rector potens verax Deus (3)
  27. 🔍 37% Jam lucis orto sidere (In Major. Festis)Jam lucis orto sidere (In Major. Festis)
  28. 🔍 37% Jam lucis orto sidere (Solemn feasts)Jam lucis orto sidere (Solemn feasts)
  29. 🔍 36% Rector potens verax Deus (4)Rector potens verax Deus (4)
  30. 🔍 36% Rector PotensRector Potens
  31. 🔍 36% Rector potens (In Dominicis per Annum)Rector potens (In Dominicis per Annum)
  32. 🔍 36% Rector potens (In Tempore Paschali)Rector potens (In Tempore Paschali)
  33. 🔍 35% Rector potens (In Festo Christi Regis)Rector potens (In Festo Christi Regis)
  34. 🔍 35% Rector potens (In Tempore Ascensionis)Rector potens (In Tempore Ascensionis)
  35. 🔍 35% Rector potens (In Adventu)Rector potens (In Adventu)
  36. 🔍 35% Rector potens (In Adventu)Rector potens (In Adventu)
  37. 🔍 34% Rerum Deus tenax vigor (In Major. Festis)Rerum Deus tenax vigor (In Major. Festis)
  38. 🔍 34% Rector potens (Tempus Nativitatis)Rector potens (Tempus Nativitatis)
  39. 🔍 33% Rector potens (In Festo S. Cordis Jesu)Rector potens (In Festo S. Cordis Jesu)
  40. 🔍 32% Rector potens (In Tempore Paschali)Rector potens (In Tempore Paschali)
  41. 🔍 32% Rector potens (In Quadragesima)Rector potens (In Quadragesima)
  42. 🔍 32% Rector potens (In Festis Minoribus)Rector potens (In Festis Minoribus)
  43. 🔍 32% Rector potens verax Deus (In Quadragesima)Rector potens verax Deus (In Quadragesima)
  44. 🔍 32% Rector potens (In Festo Pentecostes)Rector potens (In Festo Pentecostes)
  45. 🔍 31% Nunc Sancte nobis Spiritus (In Major. Festis)Nunc Sancte nobis Spiritus (In Major. Festis)
  46. 🔍 30% Rector potens verax Deus (In tempore Passionis)Rector potens verax Deus (In tempore Passionis)
  47. 🔍 29% Rector potens verax Deus (In Festis)Rector potens verax Deus (In Festis)
  48. 🔍 29% Rector potens (dom.)Rector potens (dom.)
  49. 🔍 29% Rector potens (In Dominicis per Annum)Rector potens (In Dominicis per Annum)
  50. 🔍 29% Rector potens verax Deus (Septem Dolorum)Rector potens verax Deus (Septem Dolorum)
  51. 🔍 28% Rector Potens (In Feriis per annum et Festis Simplicibus)Rector Potens (In Feriis per annum et Festis Simplicibus)
  52. 🔍 28% Rector potens verax Deus (In tempore Epiphaniae)Rector potens verax Deus (In tempore Epiphaniae)
  53. 🔍 27% Rector potens (In Festis BMV)Rector potens (In Festis BMV)
  54. 🔍 27% Rector potens verax Deus (In Feriis per annum)Rector potens verax Deus (In Feriis per annum)
  55. 🔍 26% Rector potens verax Deus (In Pentecoste)Rector potens verax Deus (In Pentecoste)
  56. 🔍 26% Rector Potens Verax Deus Hymn 1, Pg 10Rector Potens Verax Deus Hymn 1, Pg 10
  57. 🔍 26% Rector potens verax Deus (In Fer. et Fest. Simpl.)Rector potens verax Deus (In Fer. et Fest. Simpl.)
  58. 🔍 26% Rector potens (In Pentecoste)Rector potens (In Pentecoste)
  59. 🔍 26% Rector potens (In Festo Corporis Christi)Rector potens (In Festo Corporis Christi)
  60. 🔍 26% Rector potens (In Adventu)Rector potens (In Adventu)
  61. 🔍 26% Rector potens verax Deus (in Dom. et Minor. Festis)Rector potens verax Deus (in Dom. et Minor. Festis)
  62. 🔍 26% Rector potens (In Festo S. Cordis Jesu)Rector potens (In Festo S. Cordis Jesu)
  63. 🔍 26% Rector potens (Adv.)Rector potens (Adv.)
  64. 🔍 25% Rector potens verax Deus (In tempore Paschali)Rector potens verax Deus (In tempore Paschali)
  65. 🔍 25% O salutaris Hostia IIO salutaris Hostia II