Music lovers and young professionals alike are invited to the 1st annual DMV DJ Mixathon on August 15th at the Horseshoe Casino Plaza, from 12 noon to 8 p.m. The mixathon is to support, celebrate and award DJs in the DMV. This event is rain or shine. The admission and parking are free. Advance registration at achicmix. eventbrite.com is required. This event is produced by HeidnSeek Entertainment and co-hosted by Boulevard of Chic.