We’ve noticed several music companies using Promoted Tweets to advertise on Twitter recently, so here’s some news that will be of interest to the industry. Twitter is rolling out “interest targeting” – the ability to specify that Promoted Tweets and Promoted Accounts ads be shown to users who have specific interests, choosing from more than 350 categories. One of the top-line categories is Music and radio, with sub-categories below that to narrow things down further. There are other tools too: “If you’re promoting your indie band’s next tour, you can create a custom audience by adding @usernames of related bands, thus targeting users with the same taste in music,” explains Twitter’s Kevin Weil. Alongside this news, Twitter is lowering the minimum bid for its auction-based platform, which Weil claims “will drive greater ROI for every campaign on Twitter”.