You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "Bat Country peaked at #20 on the list of which hard rock and heavy metal magazine's Top 21st Century Hard Rock Songs?" whose answer is Loudwire.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Bat Country Top 21st Century Hard Rock Songs magazine
Useful Output:

Doc 1: From Metallica's 'Enter Sandman' to Idina Menzel's 'Let It Go,' memorable MLB walk-up songs abound. What's your favorite? batter-up.
Doc 2: The 50 Greatest Minivan Rock Songs. This was the dependable, generation-spanning pop/rock that filled in the gaps at the turn of the century.
Doc 3: 3: Bat Country (from 'City Of Evil', 2005). Bat Country was the song that put Avenged Sevenfold firmly on the map. As M Shadows recalled to
Doc 4: Here we are with nearly two decades worth of amazing hard rock songs. In this list, we'll run through 66 of the tracks that have left an indelible imprint on
Doc 5: This list covers the broad spectrum of hard rock (Active Rock, Classic Rock, Power Metal, Prog Rock, Punk, and beyond).