sorry for the late reply ..
You should go and download a couple of Demo versions of some easy to use sequencing software,.
My advice would be to check out Magix, www.magix.com and download a couple of the demo versions,. they make really accessible sequencing software, which comes with a bunch of sounds to get you going,. ..much like carrara and content.
As Pjotter mentioned,. you can use pre-made loop’s of audio,. or you can “play” using a midi controller and set up a VST instrument to create the sound from the midi values,
You can also “draw” music into a track, using the Midi editor page, and your mouse,. or, if you play an instrument like a guitar, you can record directly into a track,. then edit or reposition that recorded audio in the time-line if needed.
I have a little M-Audio “Oxygen8” keyboard/ midi controller,. it’s a simple 25 key keyboard with pitch and modulation wheels, and 8 control knobs .
In ANY music making software, I can set up the controller,. and assign any of the knobs to control any value in any track component,.
I also play guitar, so I can record that, then add VST effects like Guitar-Rig, to change the sound completely or just to add subtle tone and colour by adjusting the types of Mic, and Amps being “virtually” used to simulate the sound of an electric guitar on stage or in an arena, or studio. and I can add effects like Wah-wah, Fuzz, tremolo, and distortion.
or,. using the Midi keyboard,. I can assign the midi track I’m recording to,. to use a VST instrument, such as a grand piano, (real sampled sounds) instead of one of the standard GM sounds.
Most DAW’s work in exactly the same way,. allowing you to create Midi, or Audio tracks, and either Play / draw, or record directly into those tracks,. you can also purchase pre-made loops or riff’s and drag ‘n’ drop those into an audio track as “Blocks” which can be copied and pasted,. or moved around in time…
Either way,... some sequencing software is what you need to put it all together,.
your PC,. plus an input device, (Midi controller, Microphone, or a musical instrument) and some software where you can assemble / compose.
Hope it helps