You will also find emulations of classic instruments such as the Hammond B3 and Fender Rhodes pianos. To complete your track you can call upon a wide range of audio effects including reverbs, delays, distortion effects, compressors and much more. All in all, Logic Pro represents a complete music production package for your Mac.

What else do I need?

Well as you can see, Logic is a pretty comprehensive package, but to get the most from it you are most likely going to need a couple of additional pieces of kit. Firstly a sound card or audio interface. Most computers come with a built-in sound card to listen to your mp3s, watch DVDs, play video games, etc... This sound card, if equipped with audio inputs & outputs, can also be used (if compatible) with your software. However, if you plan to do a lot of recording and mixing, you really should invest in a dedicated sound card.

Secondly a MIDI keyboard. This will enable you to "play" all of the instruments within Logic. Again this is not an expensive purchase. But it will be invaluable in terms of creating musical ideas - even if you don't play piano. Otherwise you will have to resort to programming in each individual note or sound step by step which is not only laborious but also creatively stifling. Remember the great thing about software like Logic is that you can go in and edit what you've played at any time so you don't need to be a great keyboard player to start making music.

Setting up your MIDI keyboard in Logic
Once you have installed your MIDI keyboard and audio card, you will need to make sure that Logic communicates with them.

For Logic to communicate with external MIDI devices, first you will to configure the Audio MIDI Setup. The Audio MIDI setup is an application located within the Utilities folder (in Applications folder). You can quickly access it in the Apple menu bar: Go >Utilities (or press Command Shift U).

Once in the Utilities folder, open the Application Audio MIDI Setup, and click on the MIDI Devices button. You should see an IAC driver button, a network button and buttons for other MIDI devices connected to your computer. Please note that if you use a multi port MIDI interface with external MIDI devices (Synth, drum machine, etc...), you will need to make the connection manually.
Drivers for Audio Cards

To use a sound card with a computer, the operating system typically requires a specific device driver which you will have installed in the previous steps.

There are a few different driver formats available depending on the computer, the operating system and the sound card itself. Apple mac OS X uses Core Audio This driver for Mac OSX is tightly integrated into the operating system. It works with external sound cards as well as the Mac's integrated sound card (known as built-in). Nowadays, many soundcards support Core Audio out of the box, you simply 'plug & play'.

Set Up Your Audio Card with Logic

Now you have to make sure that Logic communicates with your audio card. In Preferences, select Audio > Devices > Core Audio.

Now you need to select the correct driver for your audio card. Use the drop down menu Device in order to select the appropriate driver.
Common Problems: What Is Latency?

When making music using software, the computer has a huge amount of information to process before being able to output the sound to your speakers.

This means that when you press a key on your MIDI keyboard to trigger a sound from a software synth for example, there will be a delay before you hear the sound. This delay is known as the latency.

As you can imagine, if the latency is too pronounced it will become extremely difficult to play any musical part, which is why it is important to use the best driver you can with your sound card. Furthermore there are certain parameters that you can adjust in order to improve your latency.

Buffer Size
You can reduce the latency by adjusting the audio buffer size. A small buffer size will reduce the latency, where a bigger value will increase the delay time considerably. So why not have the buffer size to the minimum value all the time to make the system more playable? Well, it is not as simple as that.

There are several parameters that directly affect each other. If the buffer size affects the latency, it also affects the processing power available to the software. Software instruments need processing power (CPU), so that the more CPU you have, the more software instruments you can load at one given time. Basically a small buffer size will put more strain on your computer in order to get a smaller latency (delay), thus using more CPU.

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