LangChain is a framework that allows developers to create agents capable of reasoning about issues and breaking them down into smaller sub-tasks. By building intermediary stages and chaining complex commands together, you can add context and memory to completions using LangChain.

Pianist Lang Lang has made a successful return to the concert stage - after almost one year's absence due to an on-going left arm injury. International superstar pianist Lang Lang has this week made a successful return to the concert stage - after almost one year's absence due to an on-going left arm injury.

Lang Lang is the most internationally recognized Chinese pianist, known for his virtuosic performances and global influence. His charismatic stage presence and dedication to music education have made him a cultural ambassador for classical music worldwide.

Lang Lang (born June 14, 1982, Shenyang, China) is a Chinese virtuoso pianist who won international acclaim while a teenager and whose expressiveness and charisma made him one of the most sought-after performers in the early 21st century.