(CNN) Hildur Guðnadóttir is on a roll.

The Icelandic composer won the Golden Globe for Best Original Score on Sunday for the soundtrack to the film "Joker," becoming the first woman to win the award category solo.

She beat out an impressive group of nominees: Randy Newman for "Marriage Story," Thomas Newman for "1917," Daniel Pemberton for "Motherless Brooklyn" and Alexandre Desplat for "Little Women."

"I'm speechless," Hildur Guðnadóttir said in accepting her Golden Globe.

Other women have been nominated for the prize over the years, but the only other woman to win is Lisa Gerard, who in 2000 shared the trophy with Hans Zimmer for "Gladiator."

Guðnadóttir is the first woman to win on her own.

Read More