A new hobby during COVID-19 quarantines has taken the world by storm, and as a result, Lego’s latest creation, a Grand Piano construction set which actually plays music, has already sold out.

The new set, known as the Grand Piano 21323 consists of 3,662 pieces and features 25 keys which are all connected to their own hammer, allowing for music play. According to the Lego website, those who purchase the set and build the piano can connect to the free Powered Up app afterward and can then access a multitude of options for playing actual music.

The set retails for $349.99 but is temporarily out of stock.

The design was created by designer Woon Tze Chee, who stated in a video on Lego’s Youtube channel that it was one of the more challenging and intricate models he had ever worked on.

“This is by far the most challenging model I’ve worked on. It’s so compact and so interconnected, and every measurement so precise that if you make one small change somewhere, it always causes a ripple effect and a chain reaction to the whole model,” he said.

Lego fans took to social media to react to the release, which also came at the same time as the Lego Super Maro NES release (still available for $229.99), and many expressed excitement over the newest set. One user revealed he was already in line at the store to get the set.

Another begged fellow builders to persuade them not to spend more money on sets, admitting that te new piano design was very tempting.

Of course, the excitement over both releases also led to frustration for some, as website crashes and errors led to some finding out their orders had been canceled because the stock had run out.

It is unclear when new sets will be available for purchase.

lego A Lego logo is pictured during the annual New York Toy Fair, at the Jacob K. Javits Convention Center on February 16, 2019 in New York City. Photo: JOHANNES EISELE/AFP/Getty Images