There are so many out there, ranging from just a couple megabytes to a 500GB library of pinpoint accurate and dynamic samples. I will discuss VST plug-ins and Mastering/EQing plug-ins in this article.
Plug-ins are little pieces of software that attach to the DAW. You can access and open software within the DAW to use it with your MIDI Controller ( A external hardware device that controls plug-ins/MIDI software) or Sampling Pad (An Electronic Percussive Device used the same was as a MIDI Controller).
Of course there are many uses for plug-ins and there are thousands of them out there. A lot of them are free to download and they are relatively easy to install.
*You can even pick up a disc of plug-in software at your local music store if they have a Pro-Audio section.*
VST Plug ins:
VST (Virtual Instrument) is a plug in that try's to mimic and simulate a real instrument. With the way technology
is growing, these virtual instruments are beginning to sound like the real deal!
Here is a short list of VST plug-ins that I have used and can recommend to you.
Guitar Rig 4
Steinbergs Virtual Guitarist
Labordance stage piano
EastWest EW-178 Quantum Leap
East West Quantum Leap Symphonic Choirs
Not all DAW plug-ins are VST. There are plug ins out there that can add effects and more mastering/EQing options, which will in tern effect the overall end product of your song. All these plug-ins are just waiting to be downloaded so go ahead and try as many as your hard-drive can handle!!!