Being a software engineer, i am also now days having an offer of a related project, and i am trying my best to avoid it, and i believe supporting any sin is as bad as the sin itself...
And ALlah says in Quran:
"Indeed, those who like that immorality(فواحش) should be spread [or
publicized] among believers will have a painful
punishment in this world and the Hereafter. And Allah knows and you do
not know." Quran 24:19
(quoted above verse in context that by publicity of that music and those artists, most probably, will spread fahash(immoral) music/songs etc, and most muslims sects consider music haraam, so...)
And i would not say its haram or not, but i would say it will add sins in your ACCOUNT too, and it's far better to avoid such things. I know in our industry, there are about half of the projects which are somehow supporting things like these, but as muslims, we have to avoid them whatsoever.