Perfectly Imperfective
Developer: RadimirSi

All story, dialogue, lesson explanations and exercises are original.
Made with Ren'Py (https://www.renpy.org/), MIT-licensed engine.

DICTIONARY
Inspect-tool definitions marked "from Wiktionary" come from English Wiktionary
(https://en.wiktionary.org/), by Wiktionary contributors, licensed under
CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Glosses are
shortened and reformatted; the cache (game/data/wiktionary_cache.*) is
redistributed under the same licence.

MUSIC
All compositions are in the public domain (or traditional). Recording credits:

"Dance of the Sugar Plum Fairies" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
http://creativecommons.org/licenses/by/4.0/

"Winter Chimes" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
http://creativecommons.org/licenses/by/4.0/

"Padanaya Blokov" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
http://creativecommons.org/licenses/by/4.0/

Glinka - Barcarole in G, performed (synthesized piano) by Adam Cuerden,
CC BY 3.0 (https://creativecommons.org/licenses/by/3.0/), via Wikimedia Commons.

Tchaikovsky - Andante cantabile, New York Classical Players (Madeline Fayette,
cello; Dongmin Kim, conductor), CC BY 3.0
(https://creativecommons.org/licenses/by/3.0/), via Wikimedia Commons.

Tchaikovsky - The Nutcracker: Russian Dance (Trepak), conducted by Philip
Milman, funded by Ludwig Ahgren & Jschlatt (Lud and Schlatts Musical Emporium),
CC BY 3.0 (https://creativecommons.org/licenses/by/3.0/), via Wikimedia Commons.

Musopen (musopen.org) - public-domain / CC0 recordings of:
  Mussorgsky - Pictures at an Exhibition: Promenade
  Tchaikovsky - Piano Concerto No. 1: II. Andantino semplice
  Rachmaninoff - Piano Concerto No. 2: II. Adagio sostenuto
  Mussorgsky (arr. Rimsky-Korsakov) - Night on Bald Mountain
    (Skidmore College Orchestra, via Musopen)
  Borodin - String Quartet No. 2: III. Notturno (Musopen String Quartet)
  Borodin - In the Steppes of Central Asia (Musopen Symphony Orchestra)

Rimsky-Korsakov - Flight of the Bumblebee, U.S. Army Band (Army Strings),
public domain (work of the U.S. federal government).

Kalinka and Korobeiniki - arrangements by Pracchia-78 (Wikimedia Commons),
public domain.

Glinka - Ruslan and Lyudmila: Overture (1911, Semyonovsky Life Guards Regiment
orchestra, cond. F. F. Sholler), Russian State Archive of Phonodocuments,
public domain.

Several long recordings were trimmed (with fades) and all tracks were
re-encoded to Ogg Vorbis for the game. Source pages: see
game/audio/music/SOURCES.md.

CHURCH MUSIC (St. Nicholas Church scenes, game/audio/church/)
------------------------------------------------------------
* Dmitry Bortniansky, Cherubic Hymn No. 7 -- Arkhangelsky Choir,
  Zvukopis' label, c. 1912. Public domain, via Wikimedia Commons.
* "Demestvenny chant of Easter" by Upupka, via Wikimedia Commons.
  Licensed under CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/
* "Strochnoy chant of Pentecost" by Upupka, via Wikimedia Commons.
  Licensed under CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/
  Both chants were trimmed, faded and loudness-normalized for Perfectly Imperfective;
  the edited versions are likewise licensed CC BY-SA 4.0.

BIBLE VERSES
------------
Russian Synodal Translation (1876) and King James Version (1611),
both public domain.
