By the 1990s, Lin wearied of successful but predictable productions. He started tripping his pieces to what he called the 'impulse" of dance--its spirit, not just its form.

Do productions, pieces, and works amount to one another?
Besides, what does the bolded part in the above refer to? Thanks.
A "work of art" may have different names, depending on which form of art you're talking about, but they would all be referred to as "works." Works performed on a stage, where "special" preparation or creative work is done for a particular series of performances, would be called a production - such as the ballet, a play, the opera, a musical, etc. A movie is also referred to as a production.

In the ballet, the music and the choreography are created by different people. Stravinski's Firebird is a ballet, but is often performed without dancers. It may be choreographed for a particular production, and may be choreographed by another "choreographer" for yet another production (with different costumes, staging, etc.), or the same choreography may be used again.

A work written (for example) for string quartet, symphony orchestra, military band, chorus, etc. would be called a piece. When it's played publicly, it's called a performance. Production wouldn't apply here, although you may also speak of the performance of an opera or ballet.

I believe the term production is also used when making a CD or music video.

A painting or sculpture may be called a piece, or a piece of art, or a work of art.

I'm not sure about "tripping" in your bolded part. Are you sure you have it right?

- A.
AvangiI'm not sure about "tripping" in your bolded part. Are you sure you have it right?

- A.

Thanks, Avangi, for the elaborate explanation.
And yes, I have "tripping" right, but I'm not sure the original copy get it right.