Studio one is a software for music. It is a sequencer, or better it is a DAW (digital audio workstation software). You can find it in more versione from free to paid. It is a very powerfull software for music, i think one of the best for a lot of motivation (technology, user-friendly, speed and a lot of other)
I use it a lot for my music for recording, arrange, mixing and mastering too.
It is realized from e famouse music brand: Presonus.
At this LINK you can find the software.