[The Boxcar Children] The Rock 'n' Roll Mystery

Hey everyone it's me again and the book I just read is The Rock 'n' Roll Mystery and it is a Boxcar Children book. The boxcar children are helping set up a music festival well there is a band there that is called the Greenfield four and they're instruments go missing! The Aldens have to find the instruments before they have to play if they don't have instruments to play they don't get a chance to be big time musicians because a big-time music producer is coming. Will the Aldens get the instruments in time or not?