Google has announced a significant change in the way it serves up results on its main search engine. “We’re transforming Google into a search engine that understands not only content, but also people and relationships,” writes Google’s Amit Singhal on the company’s blog. People who are signed in to Google.com will see Google+ posts and profiles from their circles on the social network mixed in with main search results. There are plenty of music implications. For example, searching for music itself will now bring up a sidebar of ‘People and pages on Google+’ which, in the example screenshot, includes Britney Spears, Alicia Keys and Snoop Dogg. Artists’ Google+ profiles are likely to appear higher up the main search results too. Twitter has attacked the move, saying it may prioritise Google+ over tweets in search results. “We’re concerned that as a result of Google’s changes, finding this information will be much harder for everyone. We think that’s bad for people, publishers, news organizations and Twitter users.” The two companies used to have a deal allowing Google to index tweets, but it lapsed last summer.