The story centers on a rock band called "HPL" (a very thinly disguised version of the historical band "H.P. Lovecraft") as they get ready to perform at the Fillmore in San Francisco when an iceberg from Antarctica deposits a swarm of shoggoths in the city. The story's primary POV is George, HPL's nominal leader (a thinly disguised George Edwards, the historical founder and lead of the band H.P. Lovecraft), as he and the band go through the day preparing to perform. The story then sees the band's performance interrupted by a shoggoth, which kills a pair of Old Ones attending the concert, as well as noted author and Old One expert Howard Phillips (an analog of H.P. Lovecraft), and their panicked efforts to escape the Fillmore.
"Interlibrary Loan", another story set in Lovecraft's canon. This story, set in 2017, focuses on potential impact the Cthulhu Mythos might have on the strife in the Middle East, but does not use a thinly disguised musician.