I'm trying to find a story I read in Australia, probably in the late 2000s or the early 2010s. I think it was a short story, not a full novel, and it might have been in a magazine such as Cosmos. It had a serious tone.
The story was about aliens who came from the sea. The aliens were intelligent and peaceful. The aliens loved listening to music, I think it was something spiritual or of special significance for them. Also, the aliens had a psychoactive, drug-like effect on humans who touched them. I remember it mentioned that there were "junkies" who would touch the aliens to get high.
The story was told from the perspective of a child, whose mother develops a relationship with one of these aliens & develops an addiction to the alien's touch. Later the alien starts staying over at their house & sleeping in the mother's bed. I think the alien leaves at some point & goes back to the sea. The mother falls pregnant, but I think she denies that she had sex with the alien. At the end of the story, the mother gives birth. The child protagonist notes that the baby doesn't cry, but "listens", implying this is related to the aliens' love of music.