With Frey, Eagles bandmate Don Henley and rocker Bob Seger, Souther wrote Heartache Tonight, a No.

1 hit for The Eagles in 1979 that capped a decade of the bands massive popularity and influence.

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The Eagles issued a statement about Souther of the bands website.

JD Souther dead

JD Souther circa 1980s and onstage in 2018Solters PR; Getty Images

Souther was smart, talented, well-read, and in possession of a wicked sense of humor.

…Adios,old friend.

Separately, former Eagles guitarist Don Felder posted on his site: The invisible Eagle has left the nest.

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JD Souther in ‘Purgatory’Everett Collection

His writing contribution and vocal contributions to the music industry has been a blessing to the whole world.

He will be missed, but his songs will live on forever.

Rest in peace, my friend.

3 on the Billboard 200.

11 on the Billboard Hot 100.

He also sang vocals on songs by Don Henley, Christopher Cross, Dan Fogelberg and Roy Orbison.

The title track from his third album album, it reached reaching No.

1 on Adult Contemporary radio and No.

7 on the Billboard Hot 100 pop chart.

But he never stopped writing and performing.

Souther is survived by his two sisters, his former wife Sarah Souther and step-daughter Anja Nicholson.

The family suggested that donations by made toBest Friends Animal Society.

Souther was smart, talented, well-read, and in possession of a wicked sense of humor.

He was an extraordinary man and will be greatly missed by many.Adios,old friend.