Glenn Frey regarded the Eagles’ 1975 album One of These Nights as the record that perfected the band, because it captured a more confident, polished and rock-oriented version of their sound. The article argues that the album marked a turning point, showing the growing strength of Frey and Don Henley’s songwriting partnership and helping establish the Eagles as major mainstream artists.

The group’s fourth studio album included the title track, ‘Lyin’ Eyes’ and ‘Take It to the Limit’, and became their first US number-one album. Frey said that improved songwriting, a love of studio work and a smoother creative process made it their most fluid and painless recording experience; guitarist Don Felder’s arrival also added a harder edge to the band’s country-rock foundations.