Celebrating the US’s 250th birthday with a melting pot of music

As the United States marks its 250th birthday, The World celebrates by listening to the music that’s been woven into the fabric of this country's story. Russian-born Serge Grin sings American country music and blues across Serbia. Also, Cuban American Gloria Estefan looks back at her successful career as a bilingual musician, singer and songwriter. And, a look at how the band Los Lobos celebrated its 50th anniversary of blending rock ’n’ roll and traditional Mexican music. Plus, how a gospel choir from South Africa's Soweto connected House beats with African music.