Do you need perfect pitch for initial note, or just pretty good pitch?
 
In order to get the song in key, you need perfect pitch. In order to sightsing -- neither, really, it's all about relative pitch.

Links

January

SunMonTueWedThuFriSat
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24
 
25
 
26
 
27
 
28
 
29
 
30
 
31