Very sad indeed, and way too young. Strangely, I just finished watching the two part Eagles biography last week on Netflix, which rekindled my love for the band. I just finished listening to them most of the weekend, having not listened to them in years. My wife described it as almost eerie that Glenn Frey died the next day.
Frey/Henley was truly a Lennon/McCartney caliber partnership.
Such a shame.