diff --git a/diary/2021-01-01.md b/diary/2021-01-01.md
index 0dafb2fc..a0277430 100644
--- a/diary/2021-01-01.md
+++ b/diary/2021-01-01.md
@@ -93,7 +93,7 @@ The compost for being my winter blanket.
 
 ### Related
 
-"Winter" by Edward Esch
+"Winter" by Eric Whitacre, text by Edward Esch - https://ericwhitacre.com/music-catalog/winter
 
 '''
 I.
@@ -117,7 +117,7 @@ settles,
 and disappears.
 '''
 
-From "Mid-Winter Songs" by Morten Lauridsen, text by Robert Graves
+From "Mid-Winter Songs" by Morten Lauridsen, text by Robert Graves - https://genius.com/albums/Morten-lauridsen/Mid-winter-songs
 
 '''
 *Lament for Pasiphaë*