Instructions: In this task, you are given a question. You have to answer the question based on your information.
Input: Slave Ambient is the second studio album by American indie rock band The War on Drugs, released on August 16, 2011, on Secretly Canadian, recorded over three years, "Slave Ambient" is the final release to feature contributions from which founding guitarist, that's an American singer, songwriter, multi-instrumentalist and record producer?
Output:
Kurt Samuel Vile