"Sunny Girl" is a song written by Benny Andersson, which was recorded and released as the Swedish rock group Hep Stars' tenth single in March 1966.

[3] Nonetheless, the single became a huge success in Sweden, reaching number 1 on both Kvällstoppen and Tio i Topp, their first to do so since "Bald Headed Woman" in mid-1965.

[13] After unpacking and checking in to their rooms, the band sans Andersson went to the restaurant inside the establishment.

[13] In comparison to "No Response", "Sunny Girl" was a huge leap forward for the band, because unlike the rock and roll influenced "No Response", "Sunny Girl" drew inspiration from Classical music and is as a result baroque pop.

[14] "Sunny Girl" was reportedly inspired by Andersson's girlfriend at the time, who was Norwegian.

However, Hep Stars sound engineer Gert Palmcrantz suggested that he'd play the spinet, something he agreed on and promptly slowed down the arrangement of the song.

[15] Andersson later admitted that he was heavily influenced by classical music on both "Sunny Girl" and the follow-up "Wedding".

[16] "Sunny Girl" was introduced to their manager Åke Gerhard, who saw great potential in Andersson as a songwriter, and who liked the track.

[22] The single was equally successful on Tio i Topp, where it was voted number 1 on 2 April, a position it held for six weeks.

In total, the record stayed on Tio i Topp for 14 weeks, their most successful single on that chart.

[23][24] After being played repeatedly on Radio Luxembourg, the single gained traction in the Netherlands almost two years later.

[29] The B-Side of "Sunny Girl" was a cover of the Beach Boys "Hawaii", which was recorded as a joke (in similar fashion to that of their debut single "Kana Kapila").

[35] On a bench in a dressing room in Kungsbacka, Andersson decided to dedicate his life to songwriting after this.

[33] He has stated that the feeling of physical gratification has been achieved every time he writes a song, ever since "Sunny Girl".

[37] Nonetheless, "Sunny Girl" became a huge hit, and is together with "Cadillac" and "I Natt Jag Drömde" considered to be Hep Stars signature songs.