Wikipedia
"Sha-La-La-La-Lee" was the third song by English R&B-influenced group Small Faces, released on 28 January 1966, reaching number three in the UK Singles Chart. It was also the first single by the group to feature Ian McLagan on keyboards.
Because the group's previous song release, the Marriott/Lane composition " I've Got Mine," failed to chart in the UK, their manager, Don Arden, determined that the Small Faces would not be one hit wonders, decided to bring in well-known songwriters Kenny Lynch and Mort Shuman to make sure the group's next single would be a success.
The highly commercial-sounding song proved a big hit and reached number three in the UK singles chart. Despite the success of "Sha-La-La-La-Lee," the band never really liked the song and felt it did not represent their sound, which was more R&B- and soul-oriented.
Following the huge success of this song, the band developed a large female fan base, like many of their contemporaries. This situation would ultimately end in Marriott becoming so disenchanted that he would finally leave The Small Faces in a bid to be seen as a serious musician and form his next group, the heavier rock- and blues-sounding Humble Pie.
Small Faces performed "Sha-La-La-La-Lee" live for the Dick Clark show in the United States, telerecorded from the UK.