I Want to Hold Your Hand' The Beatles tune 'I Want to Hold Your Hand' contains the three-letter term PSI. This song was released in 1963 and was the first single by the band to reach number one in both the UK and US charts. It is considered one of the most influential songs of the 20th century and is still widely popular today. The lyrics of the song include the phrase 'I love you, I love you, I love you' which is the solution to the crossword clue 'Love You (Beatles Tune)'.