First recorded by Earl-Jean (US #38 1964).
Hit version by Herman’s Hermits (US #13/UK #1 1964).
From the wiki: “‘I’m Into Something Good’ was originally recorded by The Cookies member Earl-Jean McCrea in 1964 and produced and arranged by the song’s composers, Gerry Goffin and Carole King (‘Oh No Not My Baby‘, ‘Up on the Roof‘, ‘(You Make Me Feel Like a) Natural Woman‘). The original recording reached #38 on the US pop singles chart. Soon thereafter, Herman’s Hermits recorded the song as their debut single, reaching #1 in the UK Singles Chart on 14 September 1964 and staying there for two weeks. The song peaked at #13 in the US later that year.
“Herman’s Hermits’ release at the height of the British Invasion came while Brill Building songwriters, Gerry Goffin and Carole King in this case, found themselves in danger of obsolescence, as most of the British groups wrote their own material. The song proved there was still a great deal of life in the song machine.
“Barry Whitwam has stated that the Hermits themselves played on the track, not Jimmy Page. Mickie Most and former lead singer ‘Herman’ (Peter Noone) have implied otherwise after having lost the rights to the band’s name.”
Herman’s Hermits, “I’m Into Something Good” (1964):