Guess the 1960s song lyrics #93

*First line is the band name. 1967. Celebratory song by a band with a reptilian name. Despite the joyous sound, the lyrics speak to unrequited love. This song had been offered to and rejected by numerous bands. This band was having a hard time and considered breaking up. They took it to #1. They were definitely happy they stayed together. The song has become one of the most played songs and has been the subject of copyright lawsuits. It has been used countless times on tv, film, and video games.