Friday, Aug. 16, 2019: Andy Zax, Narada Michael Walden and more

Today on q, with guest host Nana aba Duncan:

• Producer and archivist Andy Zax explains why he wanted to give listeners a way to relive the original Woodstock with a 38-disc box set.
• The q This music panel takes a look at the 20th anniversary of Christina Aguilera's pop debut and the recent surge of popularity for the metal band Tool.
• Sesame Street music director Bill Sherman tells us what goes into making the show's great songs.
• Grammy award-winning music producer Narada Michael Walden reflects on his hitmaking career with Aretha Franklin, Whitney Houston and Mariah Carey.