This is the song that Rory puts on the CD player after saying she had to listen someone named Claudine Longet.
God Only Knows was written by Brian Wilson and Tony Asher for American rock band The Beach Boys; it was recorded for their 1966 album Pet Sounds. It has been critically acclaimed as showing that rock music is an art form, and often selected by both musicians and critics as their favourite song. Released as a single, it got to #39 in the US charts, but did best in the UK where it got to #2.
The version that Rory and Lane listen to is by French singer Claudine Longet. It is from her 1972 album Let’s Spend the Night Together.