wnyc.org / 93.9fm / am 820

The world's largest jazz conference gets underway today in midtown. We'll tell you what you need to know amidst all of the round-tables, research papers, and awards ceremonies. Also: Albert Hofmann, the Swiss chemist who discovered the now-banned hallucinogenic drug LSD, celebrates his 100th birthday today. We look at it shaped music of the Hippy movement and beyond. And, a conversation with Thandiswa, an South African pop star whose gained a reputation for being the voice of a new generation of young people in South Africa. Finally, a look at "Backmasking." That's the practice of inserting hidden messages in songs that are revealed when played backwards.