Clay Walker has wrapped a music video for his new single "I Can't Sleep" in Havana, Cuba. The following day, Walker sang the national anthem at a cutting horse competition in Fort Worth, Texas. "If anyone has any doubt as to what life would be like without the freedoms and liberties granted to us in America, I suggest they spend a little time in a Communist country like Cuba," he said. ... In related news, Rosanne Cash will release a photomontage used during the recent Johnny Cash memorial concert as a music video. The poignant duet with her father, "September When It Comes," is from her Grammy-nominated album Rules of Travel.