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% Lucis Creator optime (another chant ad libitum)Lucis Creator optime (another chant ad libitum)
  2. 🔍 96% Lucis Creator optime (Alius tonus I (ad libitum))Lucis Creator optime (Alius tonus I (ad libitum))
  3. 🔍 55% Lucis Creator optimeLucis Creator optime
  4. 🔍 47% Lucis Creator optime (in Hieme)Lucis Creator optime (in Hieme)
  5. 🔍 46% Lucis Creator optime (Dom. per Annum)Lucis Creator optime (Dom. per Annum)
  6. 🔍 46% Lucis Creator optime (another chant)Lucis Creator optime (another chant)
  7. 🔍 46% Lucis Creator optimeLucis Creator optime
  8. 🔍 45% O lux beata TrinitasO lux beata Trinitas
  9. 🔍 45% Lucis Creator optimeLucis Creator optime
  10. 🔍 44% Lucis Creator optime (Alius tonus II)Lucis Creator optime (Alius tonus II)
  11. 🔍 39% Deus creator omniumDeus creator omnium
  12. 🔍 38% Jam sol receditJam sol recedit
  13. 🔍 37% Jam sol receditJam sol recedit
  14. 🔍 37% Jam sol recedit igneusJam sol recedit igneus
  15. 🔍 37% Tu Trinitatis unitasTu Trinitatis unitas
  16. 🔍 36% Tu Trinitatis UnitasTu Trinitatis Unitas
  17. 🔍 35% O lux beata TrinitasO lux beata Trinitas
  18. 🔍 35% Jam sol recedit igneus (Blessed Trinity)Jam sol recedit igneus (Blessed Trinity)
  19. 🔍 34% Lucis Creator optimeLucis Creator optime
  20. 🔍 34% Lucis creatorLucis creator
  21. 🔍 34% Lucis Creator optime (in Aestate)Lucis Creator optime (in Aestate)
  22. 🔍 34% Summae Parens clementiaeSummae Parens clementiae
  23. 🔍 34% Lucis creatorLucis creator
  24. 🔍 33% Te lucis ante terminum (In Solemnitatibus)Te lucis ante terminum (In Solemnitatibus)
  25. 🔍 32% Te lucis ante terminum (Passiontide)Te lucis ante terminum (Passiontide)
  26. 🔍 32% Te lucis ante terminum (In Major. Festis per Annum)Te lucis ante terminum (In Major. Festis per Annum)
  27. 🔍 32% Rex gloriose Martyrum (another chant)Rex gloriose Martyrum (another chant)
  28. 🔍 31% Te lucis ante terminum (Temp. Passionis)Te lucis ante terminum (Temp. Passionis)
  29. 🔍 31% A solis ortusA solis ortus
  30. 🔍 31% Elegit... virumElegit... virum
  31. 🔍 30% Invicte Martyr unicumInvicte Martyr unicum
  32. 🔍 30% Laetare caelum desuperLaetare caelum desuper
  33. 🔍 30% Veni Redemptor gentiumVeni Redemptor gentium
  34. 🔍 30% Verbum supernumVerbum supernum
  35. 🔍 30% Te lucis ante terminum (In tempore Passionis)Te lucis ante terminum (In tempore Passionis)
  36. 🔍 30% Fortem virili pectoreFortem virili pectore
  37. 🔍 30% Aeterne Rex altissimeAeterne Rex altissime
  38. 🔍 30% A solis ortus cardineA solis ortus cardine
  39. 🔍 29% Crudelis HerodesCrudelis Herodes
  40. 🔍 29% Rex gloriose Martyrum (Alter tonus)Rex gloriose Martyrum (Alter tonus)
  41. 🔍 29% Quodcumque in orbeQuodcumque in orbe
  42. 🔍 29% Hostis HerodesHostis Herodes
  43. 🔍 29% Deus tuorum militumDeus tuorum militum
  44. 🔍 28% Te lucis ante terminum (in dominicis per annum)Te lucis ante terminum (in dominicis per annum)
  45. 🔍 28% Te lucis ante terminum (In Tempore Paschali)Te lucis ante terminum (In Tempore Paschali)
  46. 🔍 28% Rerum Deus (BVM)Rerum Deus (BVM)
  47. 🔍 28% Rerum Deus tenax vigor (In Quadragesima)Rerum Deus tenax vigor (In Quadragesima)
  48. 🔍 28% Deus tuorum militumDeus tuorum militum
  49. 🔍 28% Quodcumque in orbeQuodcumque in orbe
  50. 🔍 28% Te lucis ante terminum (In Fer. et Fest. Simpl.)Te lucis ante terminum (In Fer. et Fest. Simpl.)
  51. 🔍 28% Rerum Deus tenax vigor (In tempore Passionis)Rerum Deus tenax vigor (In tempore Passionis)
  52. 🔍 28% Te lucis ante terminum (Lent)Te lucis ante terminum (Lent)
  53. 🔍 27% Te lucis ante terminum (In Dom. et Minor. Festis per Annum)Te lucis ante terminum (In Dom. et Minor. Festis per Annum)
  54. 🔍 27% Rerum Deus (In Tempore Paschali)Rerum Deus (In Tempore Paschali)
  55. 🔍 27% O sola magnarumO sola magnarum
  56. 🔍 27% Lux alma Jesu mentiumLux alma Jesu mentium
  57. 🔍 27% Deus tuorum militumDeus tuorum militum
  58. 🔍 27% Nunc Sancte nobis (In Quadragesima)Nunc Sancte nobis (In Quadragesima)
  59. 🔍 27% Et audientes discipuliEt audientes discipuli
  60. 🔍 27% Te lucis ante terminum (In Quadragesima)Te lucis ante terminum (In Quadragesima)
  61. 🔍 27% Venite exultemus IVenite exultemus I
  62. 🔍 27% Nunc Sancte nobis (In Tempore Passionis)Nunc Sancte nobis (In Tempore Passionis)
  63. 🔍 27% Rector potens verax Deus (In Quadragesima)Rector potens verax Deus (In Quadragesima)
  64. 🔍 27% Rector potens (In Tempore Passionis)Rector potens (In Tempore Passionis)
  65. 🔍 27% Rector potens (In Dominicis per Annum)Rector potens (In Dominicis per Annum)