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% Post dies octo januisPost dies octo januis
  2. 🔍 81% Post dies octoPost dies octo
  3. 🔍 78% Post dies octoPost dies octo
  4. 🔍 68% Post dies octoPost dies octo
  5. 🔍 61% Post dies octoPost dies octo
  6. 🔍 39% Post dies octoPost dies octo
  7. 🔍 37% Alleluia (T. P. Vesp. Dom.)Alleluia (T. P. Vesp. Dom.)
  8. 🔍 35% Alleluia (T. P. Vesp. Dom.)Alleluia (T. P. Vesp. Dom.)
  9. 🔍 32% Alleluia (T.P. in II nocturno)Alleluia (T.P. in II nocturno)
  10. 🔍 31% Alleluia (T. P. Laud. Dom.)Alleluia (T. P. Laud. Dom.)
  11. 🔍 31% Alleluia (mode 8)Alleluia (mode 8)
  12. 🔍 31% Alleluia Lapis revolutusAlleluia Lapis revolutus
  13. 🔍 31% Stetit Jesus in medioStetit Jesus in medio
  14. 🔍 30% Pax vobis ego sumPax vobis ego sum
  15. 🔍 30% Alleluia (T. P. Vesp. Fer. II.)Alleluia (T. P. Vesp. Fer. II.)
  16. 🔍 30% Stetit JesusStetit Jesus
  17. 🔍 30% Alleluia (T.P. ad Laudes)Alleluia (T.P. ad Laudes)
  18. 🔍 30% Alleluia (T.P. in III nocturno)Alleluia (T.P. in III nocturno)
  19. 🔍 30% Alleluia (T. P. Vesp. Fer. VI.)Alleluia (T. P. Vesp. Fer. VI.)
  20. 🔍 29% Pax vobis ego sumPax vobis ego sum
  21. 🔍 29% AlleluiaAlleluia
  22. 🔍 29% Alleluia (T. P. ad Sextam)Alleluia (T. P. ad Sextam)
  23. 🔍 29% Alleluia (mode 8)Alleluia (mode 8)
  24. 🔍 29% Alleluia (T.P. in I nocturno)Alleluia (T.P. in I nocturno)
  25. 🔍 29% Alleluia (T. P. ad Primam)Alleluia (T. P. ad Primam)
  26. 🔍 29% Alleluia (T. P. ad Tertiam)Alleluia (T. P. ad Tertiam)
  27. 🔍 29% Alleluia (T.P. ad Vesperas)Alleluia (T.P. ad Vesperas)
  28. 🔍 28% Alleluia (T. P. Laud. Fer. V.)Alleluia (T. P. Laud. Fer. V.)
  29. 🔍 27% Stetit JesusStetit Jesus
  30. 🔍 27% Alleluia (T. P. Laud. Fer. IV.)Alleluia (T. P. Laud. Fer. IV.)
  31. 🔍 27% Alleluia. (Sund. P. T. at Lauds I) Alleluia. (Sund. P. T. at Lauds I)
  32. 🔍 27% Alleluia (ant.)Alleluia (ant.)
  33. 🔍 27% Alleluia (ant.)Alleluia (ant.)
  34. 🔍 27% Alleluia Sabb. T.P. IAlleluia Sabb. T.P. I
  35. 🔍 27% Alleluia (T. P. Vesp. Fer. IV.)Alleluia (T. P. Vesp. Fer. IV.)
  36. 🔍 27% Alleluia (T. P. Laud. Fer. III.)Alleluia (T. P. Laud. Fer. III.)
  37. 🔍 27% Puer natus in BethlehemPuer natus in Bethlehem
  38. 🔍 27% Alleluia (T. P. Laud. Fer. VI.)Alleluia (T. P. Laud. Fer. VI.)
  39. 🔍 27% Alleluia (T.P. ad Nonam)Alleluia (T.P. ad Nonam)
  40. 🔍 27% Alleluia Omnes GentesAlleluia Omnes Gentes
  41. 🔍 26% Alleluia (T.P. ad Tertiam)Alleluia (T.P. ad Tertiam)
  42. 🔍 26% Alleluia Fer. II T.P. IAlleluia Fer. II T.P. I
  43. 🔍 26% Alleluia LaudateAlleluia Laudate
  44. 🔍 26% Alleluia (T.P. Feria II ad Vesperas) Alleluia (T.P. Feria II ad Vesperas)
  45. 🔍 26% Gloria in excelsisGloria in excelsis
  46. 🔍 26% Alleluia. (Wednesday P. T. at Lauds I)Alleluia. (Wednesday P. T. at Lauds I)
  47. 🔍 26% Alleluia (T. P. Laud. Sabb.)Alleluia (T. P. Laud. Sabb.)
  48. 🔍 26% Alleluia (T. P. Vesp. Sabb.)Alleluia (T. P. Vesp. Sabb.)
  49. 🔍 25% Alleluia Fer. V T.P. IAlleluia Fer. V T.P. I
  50. 🔍 25% Alleluia Faciem tuamAlleluia Faciem tuam
  51. 🔍 25% Alleluia (T. P. Complet.)Alleluia (T. P. Complet.)
  52. 🔍 25% Pax VobisPax Vobis
  53. 🔍 25% Gustate et videteGustate et videte
  54. 🔍 25% Alleluia (T. P. Complet.)Alleluia (T. P. Complet.)
  55. 🔍 25% Surrexit Dominus vere (Resp. Br.)Surrexit Dominus vere (Resp. Br.)
  56. 🔍 25% Alleluia (T. P. ad Nonam)Alleluia (T. P. ad Nonam)
  57. 🔍 25% Alleluia Dom. Compl. T.P. IAlleluia Dom. Compl. T.P. I
  58. 🔍 25% Alleluia Fer. IV T.P. IAlleluia Fer. IV T.P. I
  59. 🔍 25% ResurrexitResurrexit
  60. 🔍 25% Post dies octoPost dies octo
  61. 🔍 25% Alleluia Dominus regnavitAlleluia Dominus regnavit
  62. 🔍 25% Alleluia resurrexit DominusAlleluia resurrexit Dominus
  63. 🔍 25% Si manseritis in meSi manseritis in me
  64. 🔍 25% Alleluia Fer. VI T.P. IIAlleluia Fer. VI T.P. II
  65. 🔍 25% Alleluia Fer. IV T.P. IIAlleluia Fer. IV T.P. II