Part One:Paul and Scott pay tribute to ZZ Top's Dusty Hill, talk about bands with unchanging lineups, delve into the particulars of magnificent Songcraft beards, and take a closer look at Billboard's Christian music charts.  Part Two:Our in-depth conversation with David CrowderABOUT DAVID CROWDER:David Crowder is a phenomenally successful singer, songwriter, and musician in Christian music. He first rose to prominence with The David Crowder Band, which introduced church communities to songs such as “O Praise Him,” “Here is Our King,” and “How He Loves,” which has earned nearly 60 million streams on Spotify. The five-time Grammy nominee began a genre-bending solo career under the mononymous stage name Crowder in 2012, and has released four albums and a string of Top 10 singles including “I Am,” “Come As You Are,” “Forgiven,” “All My Hope,” “Red Letters,” and “Let it Rain.” Other staples from the Crowder songbook include “Open Skies,” “Everything Glorious,” “This I Know,” and “I’m Leaning on You.” Crowder has collaborated with a range of artists, including Chris Tomlin, Tauren Wells, Riley Clemmons, Maverick City Music, Marty Stuart, and Emmylou Harris, and has earned 16 GMA Dove Awards. His most recent album, Milk & Honey hit #1 on the US Christian charts, and the lead single “Good God Almighty” became his first song to hit #1 on all four Billboard Christian music charts.