Experimenting with inventive vocal arrangements and fuzz-toned guitar melodies, the group was a forerunner in the musical genre of psychedelic rock.

The group soon recruited Danny Houlihan (lead vocals) and replaced Abeyta with Eddie James, who already had experience performing with the Champs.

It was initially suggested by Houlihan to rechristen the group the Fe-Fi-Fo-Fum, the phrase said by the giant in the fairy tale "Jack and the Beanstalk".

Original pressings of the record printed the tag line "(From the World of LSD)", until requests by distributors resulted in its removal.

This slight alteration did not affect the single's sales, as the release's regional success prompted Polydor Records to issue "I Wanna Come Back" in Europe.