See Voice Key below.

Clicking and cow bell.

Kowolski: ((Aaaaaaaaaaaaaaaaaaaah,))
Ya-ya-ya, (aaaaaaaaaah,)
Ya-ya-ya, (aaaaaaaaaah,)
Ya-ya-ya, (aaaaaaaaa-aah.)

Sommerville:
Hey, little darlin'/
/(Bomp-bomp-bomp, bomp-de-waddie-waddie.)
Oh, little darlin'/
/(Bomp-bomp-bomp, bomp-de-waddie-waddie.)
Oh-hoh-oh where,/
/(Bomp-bomp-bomp, bomp-de-waddie-waddie.)
Ar-are you?/
/(Bomp-bomp-bomp, bomp-de-waddie-waddie.)

Sommerville: My love-a, I was wrong-a,
Kowolski: La-la-la, la, la, la.
Sommerville: To-oo try to lo-ove two.
Sommerville: A-hooha, a-hooha, hooha,
Kno-ow well-a that my love-a,
Kowolski: La-la-la, la, la, la.
Sommerville: Wa-as just fo-or you.
Sommerville: Ooo-oonly yoooooooooooou.
(Bomp-bomp-bomp, bomp-de-waddie-waddie.)
(Bomp-bomp-bomp.)

Letras de canciones similares en http://es.mp3lyrics.com/7USYSpoken:
Reed: My darlin', I need you,
Kowolski: La-la-la, la, la, la.
Reed: To call my own and never do wrong./
Reed: To hold in mine, your little hand,
Kowolski: La-la-la, la, la, la.
Reed: I'll know too soon that all is so grand.
Reed: Please, hold my hand.

Sung:
Sommerville: My dear-a,
(Bomp-bomp-bomp, bomp-de-waddie-waddie.)
Sommerville: I-I was wrong-a.
(Bomp-bomp-bomp, bomp-de-waddie-waddie.)
Sommerville: To-hoo try,
(Bomp-bomp-bomp, bomp-de-waddie-waddie.)
Sommerville: To lo-ove two.
(Bomp-bomp-bomp, bomp-de-waddie-waddie.)
Sommerville: A-hooha, a-hooha, hooha
Sommerville: Know well-a that my love-a,
Kowolski: (La-la-la, la, la, la.)
Sommerville: Wa-as just for you.
Kowolski: Oooonly yoooooooooooou.
(Bomp-bomp-bomp, bomp-de-waddie-waddie.)
(Bomp-bomp-bomp.)

Lyrics in no parentheses indicate a solo as indicated below.
Lyrics in single parentheses indicate backup singers.
Lyrics in double parentheses indicate lead singer and backup singer all sing.
Lyrics separated by a slash (/) indicate the lyrics on opposite sides of the slash are sung simultaneously.