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Just days after releasing his new track "The Flute Song," Russ has dropped another new one in the form of "Serious."

The new song arrived Friday, serving as the second preview of Russ' upcoming sophomore full-length ZOO, which will be released Sept. 7 via Columbia Records. The new project is available for pre-order.

The new music follows the rapper's debut album There's Really a Wolf, which was released just over a year ago and was certified platinum earlier this year.

ZOO is available for pre-order and "The Flute Song" is out now across digital platforms. See Russ' tour dates here.

Hear "Serious" below.