Free World Gone Wild (feat. Sam Martin) ringtone for your phone. Listen first, then download the version you like. Artist: Robin Schulz. There are 5 versions, from 15 to 60 seconds long. Tags: upbeat, house and electronic. Click a tag below to see more ringtones like this. Android users need the .MP3 file, iPhone users need the .M4R file. Both are free. To see all ringtones by Robin Schulz, use the link under the title or look at the related ringtones below.