"내 맘대로 오케스트라" offers a unique interactive orchestral experience where users can explore the composition of an orchestra while listening to recorded segments from '신세계로부터' 4th movement and '윌리엄 텔' overture finale. With 14 instrument tracks for each piece, users can learn about the instruments involved in the performances. Visual representations show the brightness changes of each instrument section during playback, aiding in identifying participating instruments. Users can also read sheet music for specific instrument groups, conduct their ensemble, adjust volume and tempo, and create personalized ensembles by layering different instrument parts. Notably, string and woodwind sections were recorded in the same space, allowing for nuanced listening experiences when selecting specific instrument groups.