The Beatles - i want to hold your hand live, 1964

"With advance orders exceeding one million copies in the UK, "I Want to Hold Your Hand" would have gone straight to the top of the British record charts on its day of release had it not been blocked by the group's first million-seller "She Loves You", their previous UK single, which was having a resurgence of popularity following intense media coverage of the group. Taking two weeks to dislodge its predecessor, "I Want to Hold Your Hand" stayed at number one for five weeks and remained in the UK top 50 for 21 weeks in total."