capitalize days in english

Yodelice/Sunday_with_a_flu.sg

@@ -1,3 +1,4 @@
+\selectlanguage{english}
 \songcolumns{2}
 \beginsong{Sunday with a flu}
   [by=Yodelice,cov=tree-of-life]
@@ -20,7 +21,7 @@
   \beginverse
     Burnt my toast and lost your number, 
     Cut my finger, spilled my beer.
-    It's been the usual sunday with a flu,
+    It's been the usual Sunday with a flu,
     And I just can't get over you.
   \endverse
 
@@ -33,7 +34,7 @@
   \beginverse
     Had a chat and left my hat,
     Ate my dog and walked my cat.
-    It's been the usual sunday with a flu,
+    It's been the usual Sunday with a flu,
     And I just can't get over you.
   \endverse
 
@@ -42,7 +43,7 @@
   \beginverse
     Called a cabbage, threw the garbage,
     Asked for help and got some kelp.
-    It's been the usual sunday with a flu,
+    It's been the usual Sunday with a flu,
     And I just can't get over you.
   \endverse