Hot Country Songs is a chart that ranks the top-performing country music songs in the United States, published by Billboard magazine. In 1990, 24 different songs topped the chart in 52 issues of the magazine. The chart was published under the title Hot Country Singles through the February 10 issue and Hot Country Singles & Tracks thereafter. With effect from the January 20 issue, Billboard discontinued its longstanding methodology of compiling the chart based on playlists submitted by country music radio stations and sales reports submitted by stores and instead began basing the chart on weekly airplay data from radio stations compiled by Nielsen Broadcast Data Systems.