The 2011 CMA Music Festival brought a record $30 million in tourism spending this month, according to Smith Travel Research, a data tracking firm. The four-day event attracted 65,000 country fans and helped fill an estimated 110,000 hotel rooms, according to the study. The 2010 event brought in an estimated $24 million. The CMA is still tabulating this year’s official revenue. Half of the event’s proceeds will benefit the organization’s campaign to keep music in local schools. A three-hour special, CMA Music Festival: Country’s Night to Rock, will air Aug. 7 on ABC.