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% Before the ending of the day (Advent tone)Before the ending of the day (Advent tone)
  2. 🔍 93% Before the ending of the day (Epiphany tone)Before the ending of the day (Epiphany tone)
  3. 🔍 92% Before the ending of the day (Sunday tone)Before the ending of the day (Sunday tone)
  4. 🔍 91% Before the ending of the day (Feast tone)Before the ending of the day (Feast tone)
  5. 🔍 90% Before the ending of the day (Solemnity tone)Before the ending of the day (Solemnity tone)
  6. 🔍 87% Before the ending of the day (ferial tone)Before the ending of the day (ferial tone)
  7. 🔍 86% Before the ending of the day (Memorial tone)Before the ending of the day (Memorial tone)
  8. 🔍 84% Before the ending of the day (Memorials and Feasts of Our Lady)Before the ending of the day (Memorials and Feasts of Our Lady)
  9. 🔍 32% Ave Rex nosterAve Rex noster
  10. 🔍 30% Gloria (Introits tone 5)Gloria (Introits tone 5)
  11. 🔍 29% Gloria (Introits tone 4)Gloria (Introits tone 4)
  12. 🔍 29% Gloria (Introits tone 1)Gloria (Introits tone 1)
  13. 🔍 28% Gloria (Introits tone 3)Gloria (Introits tone 3)
  14. 🔍 28% Gloria (Introits tone 7)Gloria (Introits tone 7)
  15. 🔍 27% Gloria (Introits tone 8)Gloria (Introits tone 8)
  16. 🔍 27% Et valde mane (cum cantico Benedictus)Et valde mane (cum cantico Benedictus)
  17. 🔍 25% Gloria (Introits tone 6)Gloria (Introits tone 6)
  18. 🔍 25% Gloria (Introits tone 2)Gloria (Introits tone 2)
  19. 🔍 24% Pueri Hebraeorum 2Pueri Hebraeorum 2
  20. 🔍 24% Lauda Syon SalvatoremLauda Syon Salvatorem
  21. 🔍 23% CoeperuntCoeperunt
  22. 🔍 22% Adorna thalamumAdorna thalamum
  23. 🔍 22% Lumen HilareLumen Hilare
  24. 🔍 21% Hodie scietisHodie scietis
  25. 🔍 21% Domini est terraDomini est terra
  26. 🔍 21% Gaudeamus ... AnnaGaudeamus ... Anna
  27. 🔍 21% Beata visceraBeata viscera
  28. 🔍 21% Credo IIICredo III
  29. 🔍 21% Libera me Domine de morteLibera me Domine de morte
  30. 🔍 20% SuscepimusSuscepimus
  31. 🔍 20% Felices sensusFelices sensus
  32. 🔍 20% GloriaGloria
  33. 🔍 20% HosannaHosanna
  34. 🔍 20% Calix benedictionisCalix benedictionis
  35. 🔍 20% SuscepimusSuscepimus
  36. 🔍 20% Cum angelisCum angelis
  37. 🔍 20% Dicit DominusDicit Dominus
  38. 🔍 20% De fructu operumDe fructu operum
  39. 🔍 20% Gaudeamus ... AgathaGaudeamus ... Agatha
  40. 🔍 20% Domine Jesu ChristeDomine Jesu Christe
  41. 🔍 20% Deus IsraelDeus Israel
  42. 🔍 20% Gaudeamus ... ConceptionGaudeamus ... Conception
  43. 🔍 20% Gaudeamus ... AssumptionGaudeamus ... Assumption
  44. 🔍 19% Agnus Dei XIAgnus Dei XI
  45. 🔍 19% In splendoribusIn splendoribus
  46. 🔍 19% Stabat MaterStabat Mater
  47. 🔍 19% ExsultetExsultet
  48. 🔍 19% Nunc scioNunc scio
  49. 🔍 19% Occurrunt turbaeOccurrunt turbae
  50. 🔍 19% Pueri Hebraeorum 1Pueri Hebraeorum 1
  51. 🔍 19% Turba multaTurba multa
  52. 🔍 19% Agnus (November 2)Agnus (November 2)
  53. 🔍 19% Dum venerit ParaclitusDum venerit Paraclitus
  54. 🔍 19% Os justiOs justi
  55. 🔍 19% Gaudeamus ... Mary MagdalenGaudeamus ... Mary Magdalen
  56. 🔍 19% Crucem tuam adoramusCrucem tuam adoramus
  57. 🔍 19% Protector nosterProtector noster
  58. 🔍 19% Viderunt omnesViderunt omnes
  59. 🔍 19% Juxta vestibulumJuxta vestibulum
  60. 🔍 18% EmendemusEmendemus
  61. 🔍 18% SuscepimusSuscepimus
  62. 🔍 18% Justorum animaeJustorum animae
  63. 🔍 18% QuotiescumqueQuotiescumque
  64. 🔍 18% Dominus DixitDominus Dixit
  65. 🔍 18% Gaudeamus ... ThomasGaudeamus ... Thomas