Task: Explanation
Input (English): 39/Smooth is the debut studio album by American punk rock band Green Day, released on April 13, 1990, by Lookout Records on vinyl (black and green) and cassette. It is the band's only studio album to feature original drummer John Kiffmeyer. Jesse Michaels of Operation Ivy contributed the artwork on the album. The inner sleeve shows handwritten lyrics by Billie Joe Armstrong and letters by drummer John Kiffmeyer and Lookout owner Larry Livermore to I.R.S. Records, rejecting an offer to sign to the label and declaring its loyalty to Lookout! Records (however, the band would later leave Lookout! and move to a major label, Reprise Records). Although it is currently out of print, "39/Smooth" was later rereleased, along with the group's two previous extended plays "Slappy", "1,000 Hours" and the song "I Want to Be Alone" (from "The Big One", a compilation album released by Flipside Records in 1990) on the compilation album "1,039/Smoothed Out Slappy Hours" in 1991. Question: What nationality was the singer  who hand wrote the lyrics shown on the inner sleeve of 39/Smooth? Answer: American
Output (English):  The inner sleeve shows handwritten lyrics by Billie Joe Armstrong and letters by drummer John Kiffmeyer and Lookout owner Larry Livermore to I.R.S. Records, rejecting an offer to sign to the label and declaring its loyalty to Lookout!