Zac Brown surprised the fan who became his millionth Twitter follower with a personal phone call. Brown and his bandmate Clay Cook called Sarah Veinot after reaching the monumental mark, and left her a voicemail when she didn't answer. “Thank you for being our one millionth Twitter follower -- hope this is the right number," said Brown and Cook. "If it’s not, can you see that Sarah gets this information? She’s on Twitter, she’s one of our fans. So…we’re gonna get this to her somehow!” Veinot got the message, later tweeting, "ZAC BROWN BAND CALLED ME AND I MISSED IT, I’m so sad. Thanks for the message though!"