Final answer:
Into the Wild does not mention Chris McCandless attending a music concert after his release from jail; the book primarily focuses on his solitary existence in the Alaskan wilderness.
Step-by-step explanation:
In Into the Wild by Jon Krakauer, there is no specific mention of Chris McCandless attending a music concert after he gets out of jail. The book details McCandless's journey into the Alaskan wilderness to seek a life of solitude and self-reliance, reflecting influences such as Henry David Thoreau's Walden. While Krakauer provides extensive insight into McCandless's adventures, the focus is on his experiences in nature rather than social events such as concerts.