I personally consider Bach's Six Solo Cello Suites to be one of the high points in the musik making history of all beasts. The following clip shows Pablo Casals, who supposedly released, and popularized, these long buried or hidden Bach's djinns over the modern ear, playing the First Cello Suite:

Then we have Andres Segovia, the foremost master of classical guitar, playing the prelude of the same Cello Suite here:

Also here are peices by two other excellent cellists: Prelude to the First & Prelude to the Sixth. Life with the possibility of encounters with such music can't be bad, no it needs to be celebrated! Go, listen, and be amazed.