UnScramble this Word: r p o s k t w o?

Questions

Puccini's finest opera was completed after his death by his frend Franco Alfano. It is a fairy tale about a cruel but beautiful Chinese princess. ?

Tchaikowsky's "Piano Concerto in A-flat minor" was rejected as "unplayable" by the 19th century virtuoso for whom it was written. ?

A performance by this folk-orchestra at the Paris Exhibition is said to have made a marked impression on Debussy. ?

Bach wrote a charming collection of easy piano pieces for his second wife: ?

Debussy is noted for his use of this non-traditional scale. ?