Lego Ideas Grand Piano - 21323

The Basics

  1. The Grand Piano has 3664 pieces

  2. 25 keys each with their own hammer

  3. Authentic displayed reproduction

  4. Powered Up app compatibility

  5. The Grand Piano is 8.5" high, 12" wide and 13.5" deep

Lego Mania Fan Review

Lego has gone elegant and posh with this model. A beautiful design that is functional and app operated. The piano can hold a tune with auto-play or self-play with an incorporated song sheet. The process of building this is carefully plotted out with you challenging your skills around fitting hammers and strings to get an accurate sound. TBuilding this model requires a bit of mastery to ensure quality sound. This is definitely one of those exciting models where you believe it looks stunning as a display and then surprise friends with the level of quality from the performance of the app. A great feature that is noteworthy (pardon the pun) is the gold Lego logo on the frame which then lifts to present keys. Similarly, the lid lifting to present the stunning gold strings and wooden-inspired internal framework. Dont forget the running wheels which is completely in keeping with the stylist nature of a Grand Piano. This is another great dimension to an already broad Lego portfolio.

Symphony in precision

Watch a masterpiece in motion with 25 keys each connected to their own hammer. Display an authentic reproduction with details worthy of a standing ovation. Connectable to the free Power Up app to bring the piano to life in sight and sound.

Check out this awesome video with the creators.

From the Manufacturers

Do you have a passion for music? Do you like to relax by focusing on a fun, hands-on project in your free time? If so, this incredible LEGO® Ideas Grand Piano model kit (21323) is just the creative activity for you.

Beautiful and playable Feel the pride of building a sophisticated, brick-built version of a concert grand piano that you can actually play music with! Recreate the hammer action of each piano key, the moving pedal and authentic details such as the propped-open top lid and fallboard. Turn on the motor and then you are all set to play wonderful music – select user play on the free LEGO Powered Up app to play the notes yourself or activate auto play and just listen.

LEGO sets for your lifestyle Take some time out and enjoy creating a LEGO musical masterpiece to display in your home or workplace. Part of a collection of LEGO building sets for adults, it makes a truly special birthday present or Christmas gift for yourself, the musician, piano player or hobbyist in your life.

Inspired by musicians

Drum roll please as we proudly introduce the first-ever, playable LEGO® Grand Piano! Experience the hands-on pleasure of creating a highly sophisticated LEGO concert piano model and then play beautiful music with it.

The LEGO® Ideas Grand Piano (21323) has a removable 25-key keyboard, authentic hammer action, moving dampers and pedal, and motor. Combined with the LEGO Powered Up app, you can play a tune yourself or automatically

A world of unlimited play possibility

Revel in the authentic design details of this beautiful model, from the top lid that can be propped up just like a real grand piano’s, to the opening fallboard and piano leg wheels, plus a height adjustable bench.

If you are looking for a creative DIY project, this 3,662-piece model building kit is ideal for you. So, take some time out and click your stress away with a rewarding challenge that will leave you feeling revitalized.

Auto-Play with your Smartphone

To power up the grand piano’s self-playing function, you’ll need 6 AAA batteries (not included) and the free LEGO® Powered Up app – choose 'user play' to play the notes yourself or 'auto play' to listen to 1 of 4 songs.


The piano measures over 8.5” (22.5cm) high, 12” (30.5cm) wide and 13.5” (35.5cm) deep when closed. A stylish item for your home or workplace, it also makes a cool gift for musicians, music-lovers, pianists and hobbyists.

Clear instructions help you to build with confidence and really enjoy the process, even if you are a LEGO® newcomer. Also included is a coffee-table-style booklet about this grand piano set’s fan designer and more.

This LEGO® Ideas building set for adults is part of a collection of inspiring model kits designed for the discerning hobbyist who relishes an immersive, hands-on DIY project.

Since 1958, LEGO® building bricks have met the highest industry standards, which ensures they are consistent, compatible and connect and pull apart easily every time.

LEGO® bricks and pieces are rigorously tested to meet exacting safety and quality standards, so you can be sure that this collectible grand piano model is as robust as it is beautiful.

Customer Reviews of This Build

This model is coming in hot at a rating of 4.7 out of 5 in Amazon and 4.3 out of 5 on Lego. This seems to be an all-round success in terms of review satisfaction. It looks great, sounds great and has great communication with the app. Overall straightforward to build but requires a bit of toying around with the strings and hammers then allowing them to form their own sound over time. The self-play function has had the same impact on the customers than it did on me, mesmerising and surprising.

In Summary

The comment reviews speak for this product it really is mesmerising and stylish. This is a very creative build with a less than conventional Lego shape. It has curves, strings, hammers and a powered up app. Literally, everything a collector or Lego fanatic could ask for. It is extremely good value for money and would sit nicely on display on any worktop. Set up, allow people to become curios of it and then blow their mind with the auto-play function. A perfect talking piece for any office. If you are a fan of music of any kind, this is a great example of what you can do with just about anything.

Keep on Building and coding

Much Love

Lego Mania x