If you want to read about the history, construction, sounds and playing techniques of, say, the tympani, or any other instruments of the classical symphonic orchestra, Vienna Symphonic Library's Instruments Online pages are good reading and a handy resource for orchestrators.
It was music to be heard, not listened to. It was the soundtrack to the relaxed, sophisticated, mature vision of the good life. It was music for lovers. It was upbeat, elaborately arranged, chart-toppingly popular, and yet has been almost written out of the popular music history books, dismissed as “elevator music”; soulless, toned-down, pre-chewed, limp cover-versions of popular songs for old people. So sit back, put aside the politics and angst, slip into something comfortable (preferably with someone of similar description), and allow yourself to experience The Joy of Easy Listening [2, 3, 4, 5, 6]