On this day in music history: July 26, 1975 – “One Of These Nights” by The Eagles hits #1 on the Billboard Top 200 for 5 weeks. Produced by Bill Szymczyk, it is recorded at Criteria Studios in Miami, FL and The Record Plant in Los Angeles, CA from December 1974 – March 1975. Following the success of their previous release “On The Border”, the Eagles continue to move away from the country rock influences of their earlier work, toward a more hard rock and mainstream pop sound. Considered their breakthrough album, it firmly establish them as one of the top American bands of the time, spinning off three top five singles including “Lyin’ Eyes” (#2 Pop) (Grammy Winner for Best Pop Performance by a Group in 1976), “Take It To The Limit” (#4 Pop), and the chart topping title track. The album is the last to feature original founding member Bernie Leadon, who leaves the band following the tour in support of the record. Leadon’s place is taken by former James Gang guitarist Joe Walsh in late 1975. “One Of These Nights” is certified 4x Platinum in the US by the RIAA.