Piano no Mori

Both about pianists finding themselves though music. Although both feature children they have dark/emotional moments. 

Exceptionally beautiful backgrounds plus classical piano music, complete with a competition.  

Both are about classical music, but it has more a central place in Piano no Mori. Both are about the hardships of being a professional at a younger age. Piano no Mori is perfect if you want more of the classical music that you got in Shigatsu wa kimi no uso. 

Shigatsu wa Kimi no Uso and Piano no Mori both follow the tale of two types of people in the world of music who collide with each other—one who plays according to the score, and one who plays according to their feelings. Similarly to Piano no Mori's Shuuhei and Kai, Shigatsu wa Kimi no Uso follows Arima and Miyazono's journey together as they work together to achieve goals whilst learning to understand each other. If the clashing of two minds and souls in Piano no Mori wasn't enough, Shigatsu wa Kimi no Uso will definitely satisfy your cravings! 

Just as how Arima Kousei in Shigatsu wa Kimi no Uso is a piano prodigy, so is Amamiya Shuuhei in terms of his dad also being one of the great pianists at the time. -Shuuhei has taken strict piano lessons since he was young just as Kousei -Both Kousei and Shuuhei has had troubles producing sound from the piano (either from the piano in the forest or where Kousei can't hear the notes he plays) -Miyazono Kaori is also similar to the character of Ichinose Kai, how they're both cheerful about the music they produce and how they both help out the main characters be their partners in music - Just as Kaori shows her violin playing to be free and of her own; Kai also plays the piano freely and of his own world. (both of them not following the scores of the music but simply playing it their own style) read more 

Both have beautiful settings, are sentimental and have two young people facing life together and with music. 

Both Shigatsu wa Kimi no Uso and Piano no Mori are about music and the feelings of people with different playstyles. Kusei, just like Shuuhei, is extremely good at the piano and has been through tough training to always play according to the score and achieve his goals, while Kaori is playing according to her feelings, just like Kai. Both anime follow the thoughts and the interactions between the characters as they try to understand and learn from each other. If you liked Piano no Mori, but seemed a little short, you will defenitely like Shigatsu wa Kimi no Uso, which shows more of the characters' feelings and interactions. read more 

Both are about two pianists and their "relationship" with their piano, which is affected by the meet of a person with a completely different view on music. 

Both anime convey the growth and development of friendships, no matter how unlikely they may be, through the use of of one primary instrument and common bond, the piano. With touching plots both coinciding with traditional, powerful soundtracks- if you like one of them you'll most likely enjoy the other. 

These are both about young musicians and how they encourage each other grow and develop their musical talents. They feature a similar pair of lead characters: one is a rigorously trained perfectionist and the other is a free-spirited natural talent. Also, classical music plays a large role in Nodame and Piano no Mori. 

Both are about playing the piano and classical music. The two lead characters share similar key features like how Chiaki and Amamiya are both neat and play music true to the score and perfectly, while Nodame and Kai enjoy the feeling of playing and not so much to do it in the right way. The passion for music is an essence in both and it all boils down to the joy of music.  

These two anime belong together. Nodame is Kai, whilst Chiaki is Amamiya. Piano no Mori is the kid-version of Nodame Cantabile and is simpler however, both anime feature characters who are finding their dreams and want to reach them. As another MAL user said, "one is a rigorously trained perfectionist and the other is a free-spirited, natural talent". Nodame and Kai both play by ear too. Pianos. Yaaaay. :)  

They have very similar main characters, down to their character design. And they have a similar relationship with each other. The animation in the music scenes of both is great too. They're slice of lives, they start with a school transfer and they end with a separation. But most importantly, if Sakamichi no Apollon made you love jazz, Piano no Mori will make you love classical. Or vice-versa. 

They are pretty much have the same types of characters with different stories. They star mainly two young boys who love to play music. The boys have very similar character traits with one being poor and the outgoing type that tends to fight and plays music because he loves too. While the other is rich and shy tends to take himself seriously and does it both because he enjoys it and out a sense of duty. 

We can see a rivalty between two talented boys: one is intelligent, well-mannered and has brilliant skills 'cause he trained himself since he was an infant; and another is quick-tempered, wilful and not willing to play or participate in competitions for the first time. Really, Hikaru is very like Kai ! But Akira is more proud than Amamiya is.