Where did the second single from the September 15, 2017 Foo Fighters album peak on the Billboard" Mainstream Rock Songs chart?
Concrete and Gold: Concrete and Gold is the ninth studio album by American rock band Foo Fighters. Concrete and Gold:  The album's first single, "Run", was released on June 1, 2017, and topped the US "Billboard" Mainstream Rock Songs chart the following month. Concrete and Gold:  The second single, "The Sky Is a Neighborhood", was released on August 23, 2017. The Sky Is a Neighborhood:  It was released as the second single from their ninth album "Concrete and Gold" on August 23, 2017. The Sky Is a Neighborhood:  As of September 2017, the song had peaked at number 7 on the "Billboard" Mainstream Rock Songs chart.
number 7