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% Haec hora (TP)Haec hora (TP)
  2. 🔍 68% Haec horaHaec hora
  3. 🔍 58% Iam surgit TPIam surgit TP
  4. 🔍 54% Haec hora (Pentecostes)Haec hora (Pentecostes)
  5. 🔍 52% Aurora lucisAurora lucis
  6. 🔍 51% Venite servi (TP)Venite servi (TP)
  7. 🔍 39% Iesu redemptor saeculi TPIesu redemptor saeculi TP
  8. 🔍 27% Iam surgitIam surgit
  9. 🔍 27% Exsultet iam angelicaExsultet iam angelica
  10. 🔍 27% Haec dies simpl.Haec dies simpl.
  11. 🔍 25% Pergrata mundoPergrata mundo
  12. 🔍 25% Rerum Deus tenax (dom.)Rerum Deus tenax (dom.)
  13. 🔍 24% Crux de te volo conqueriCrux de te volo conqueri
  14. 🔍 24% Adesto rerum conditorAdesto rerum conditor
  15. 🔍 24% Aeterna caeli gloriaAeterna caeli gloria
  16. 🔍 23% Te lucis ante terminumTe lucis ante terminum
  17. 🔍 23% Rerum Deus tenax vigor (In Feriis per annum)Rerum Deus tenax vigor (In Feriis per annum)
  18. 🔍 23% Maria Mater gratiae (cantus III)Maria Mater gratiae (cantus III)
  19. 🔍 23% Plasmator hominisPlasmator hominis
  20. 🔍 23% Angelus ad pastoresAngelus ad pastores
  21. 🔍 23% Praefatio ferialis de Ecclesiae DedicationePraefatio ferialis de Ecclesiae Dedicatione
  22. 🔍 22% Sol ecce lentusSol ecce lentus
  23. 🔍 22% Haec locutus ... ut cumHaec locutus ... ut cum
  24. 🔍 22% Nox et tenebraeNox et tenebrae
  25. 🔍 22% Sicut pratum picturaturSicut pratum picturatur
  26. 🔍 22% Certum tenentes (In feriis per annum)Certum tenentes (In feriis per annum)
  27. 🔍 22% Certum tenentes (In dominicis per annum)Certum tenentes (In dominicis per annum)
  28. 🔍 22% Telluris ingens conditorTelluris ingens conditor
  29. 🔍 22% Laudes Crucis AttollamusLaudes Crucis Attollamus
  30. 🔍 22% Rerum Deus (In Tempore Paschali)Rerum Deus (In Tempore Paschali)
  31. 🔍 22% Splendor paternaeSplendor paternae
  32. 🔍 21% Aurora iamAurora iam
  33. 🔍 21% Exsultet jam AngelicaExsultet jam Angelica
  34. 🔍 21% Iesu corona virginumIesu corona virginum
  35. 🔍 21% Adesto rerum conditorAdesto rerum conditor
  36. 🔍 21% Aeterne rerum ... noctemAeterne rerum ... noctem
  37. 🔍 21% Dicamus laudes (In feriis)Dicamus laudes (In feriis)
  38. 🔍 21% Ave Regis AngelorumAve Regis Angelorum
  39. 🔍 21% Verbum salutis omniumVerbum salutis omnium
  40. 🔍 21% Dicamus laudes (In dominicis)Dicamus laudes (In dominicis)
  41. 🔍 21% Passio DNJC secundum MarcumPassio DNJC secundum Marcum
  42. 🔍 21% Te lucis ante terminum (In Nativitate Domini)Te lucis ante terminum (In Nativitate Domini)
  43. 🔍 21% Dies aetasque (+rhythmic signs)Dies aetasque (+rhythmic signs)
  44. 🔍 21% Petre sol terrisPetre sol terris
  45. 🔍 21% Maria Mater gratiae (cantus II)Maria Mater gratiae (cantus II)
  46. 🔍 21% Ave lumenAve lumen
  47. 🔍 21% Dulci depromatDulci depromat
  48. 🔍 20% Conditor alme siderumConditor alme siderum
  49. 🔍 20% Gloria XV (forma ordinaria)Gloria XV (forma ordinaria)
  50. 🔍 20% Mundi renovatioMundi renovatio
  51. 🔍 20% Rerum Deus (In Tempore Ascensionis)Rerum Deus (In Tempore Ascensionis)
  52. 🔍 20% Auctor salutisAuctor salutis
  53. 🔍 20% Nunc Sancte (dom.)Nunc Sancte (dom.)
  54. 🔍 20% Laetare caelum desuperLaetare caelum desuper
  55. 🔍 20% Rerum creator (+rhythmic signs)Rerum creator (+rhythmic signs)
  56. 🔍 20% Hic est diesHic est dies
  57. 🔍 20% Venit Maria nuntiansVenit Maria nuntians
  58. 🔍 20% O sator rerumO sator rerum
  59. 🔍 20% Te DeumTe Deum
  60. 🔍 20% Ternis horarum (In dominicis per annum)Ternis horarum (In dominicis per annum)
  61. 🔍 20% Christe precamurChriste precamur
  62. 🔍 20% Rerum creator optimeRerum creator optime
  63. 🔍 20% Ternis horarum (In feriis per annum)Ternis horarum (In feriis per annum)
  64. 🔍 20% Ales diei nuntiusAles diei nuntius
  65. 🔍 20% Te lucis ante terminum (In Tempore Paschali)Te lucis ante terminum (In Tempore Paschali)