With an audience spike of 3.8 million impressions, David Nail claims his first No. 1 on the Country Songs chart, as "Let It Rain" draws Greatest Gainer applause and steps 2-1 in its 49th chart week -- the second-longest No. 1 trek in the chart's 68-year history and longest for a song over one release cycle.

Chris Young's twice-released "Voices" (2008/2010) reached the summit in its 51st chart week last February, and Nail's slow pace pushes Tracy Lawrence's 41-week climb with "Find Out Who Your Friends Are" (2007) to third place among the chart's longest No. 1 trips. The new No. 1 is also a first for featured singer Sarah Buxton, who previously rose as high as No. 23 with "Outside My Window" in 2010.

On Country Digital Songs, "Rain" moves 27,000 downloads and ranks at No. 21 in its 19th chart week.

CHARTS: Country Songs | Country Albums

Also noteworthy on Country Songs, Keith Urban claims his 27th top 10 with "You Gonna Fly," which gains 2.8 million impressions and shifts 11-10. He first cracked the top 10 with "Your Everything" which peaked at No. 4 in September 2000. Meanwhile, Luke Bryan claims his sixth -- and quickest -- top five, as "I Don't Want This Night to End" hops 6-4 in its 19th chart week. His previous best was a 21-week trek with "Country Girl" last summer, and his slowest happened when debut single "All My Friends Say" took 34 weeks in 2007.

The second radio track from Toby Keith's "Clancy's Tavern" becomes the artist's first million-selling download (1.02 million), with 119,000 downloads sold this week, according to Nielsen SoundScan, it remains atop Country Digital Songs for a ninth cumulative week, and steps 14-13 on Country Songs.

There was no change atop the Country Albums chart, with Lady Antebellum's "Own the Night" holding at No. 1 for an eighth cumulative (fourth consecutive) week since its September release.