ザ · ピーナッツ, ちいさな幸せを

A contribution of utasuki272
A contribution of showgee:
This song originally released on Feb. 5th '67 as "ちいさな幸せ"(My little happiness) was composed and sung by one of popular "Group Sounds" groups called ワイルド・ワンズ(The Wild Ones).
This Peanuts version seems to be recorded a few months after with ジャッキー吉川とブルー・コメッツ 's (Jackey Yoshikawa & His Blue Comets; the most popular,successful and talented Group Sounds group) rendering and chorus. I like this version much better. I could trace some Group Sounds flavors in this tune.
My two cents worth

Wiki says "Group Sounds (G.S.) is a genre of Japanese rock music which became popular in the mid to late 1960s and initiated the fusion of Japanese kayōkyoku music and Western rock music.Their music production techniques were regarded as playing a pioneering role in modern Japanese popular music."