Classic rock has lost one of its most unforgettable voices. David Clayton-Thomas, the legendary singer who helped make Blood, Sweat & Tears one of the biggest bands of the late 1960s and early 1970s, has died at the age of 84. From "Spinning Wheel" to "You've Made Me So Very Happy" and "And When I Die," David Clayton Thomas leaves behind a legacy that continues to inspire generations of music fans. Rest in peace, David Clayton-Thomas.