This Fugue, from Bach's 48 Preludes and Fugues (known as The Well Tempered Clavier), is in 4 parts. Generally speaking the top 2 parts are notated for the right hand and the bottom two by the left hand, but there are places in the score where it is much easier to play the middle parts with the other hand. This fugue should be played slowly and smoothly with appropriate slurring to separate the repeated quavers. The corresponding Prelude no.14 from book 1 is also available on mfiles, with both in the key of F-sharp minor and the pair together catalogued as BWV 859.
Although there are some easier preludes and fugues in the set, much of Bach's Well-Tempered Clavier is quite challenging to play. However the complete set has for a long time been considered a must for any serious student of piano. Some other preludes and fugues from the set are available on mfiles if you check the Bach page or Classical Sheet Music page. If you have aspirations to be a good classical pianist then we recommend getting the complete Well-Tempered Clavier which comes in two books. Here are links on "sheet music plus" to Book 1 and Book 2 of the Well-Tempered Clavier.
The audio controls below allow you to play the mp3 version of Bach's Fugue No. 14 in F-sharp minor from Book 1 or you can download the MP3 file. You can also download the midi version of Bach's Fugue No. 14 in F-sharp minor from Book 1.
The image below is the first page of the sheet music, and here you can download the full sheet music for Bach's Fugue No.14 from book 1 in PDF format.