Open Logic Pro to create a new music project. If you cannot find Logic Pro, click your main "Macintosh HD" folder on your desktop, select "Applications" and locate Logic in your applications list. If Logic Pro does not automatically present you with a "New Project" window, click "File" on the menu bar and select "New" from the drop-down menu. On the "New Project" window, you can enter a title for your song, select a tempo (speed), a key and your desired number of tracks, or recording layers, of which you should include one for every instrument and vocal layer. For example, if recording a voice and a guitar, you will want to use two tracks. If recording an entire band, you will need more.
Record music by selecting any blank track with your mouse and clicking the "Record" button (resembling a red dot) at the bottom of your project window. Your tracks appear horizontally along the time line (like long bars) and their titles appear in the left column, such as "AUDIO 1" and "INST 1." If connecting a MIDI keyboard to your computer for digital recording, use the "INST" tracks. If recording through your computer's microphone or with analogue instruments, use the "AUDIO" tracks. When you finish recording a sequence, click the "Stop" button.
Layer your music by recording subsequent sections on additional tracks. For example, if you record a guitar sequence on the "AUDIO 1" track, you might want to add a bass line or vocals to "AUDIO 2." For the best audio quality, connect a pair of headphones to your computer and listen to your first track while recording the second. If your computer microphone picks up the sound from your first track as you record the second, your sound quality will suffer dramatically. Headphones will remedy this problem.
Use your computer keyboard as a musical instrument. Click the "CAPS LOCK" key on your keyboard to reveal a virtual music keyboard on your screen. While the keyboard remains visible (with "CAPS" turned on), you can use your computer keyboard as though it were a virtual piano (or other instrument of your choosing). Your home keys, beginning with ASDF, assume the role of CDEF on a piano, and continue with subsequent keys as you move to the right. Just follow the guide on your screen. You can even select any digital instrument from the "Inputs" field on your mixer and play your keys as synthesizer notes, piano notes, bass notes or percussion notes. To access your mixer, click "Window" on the menu bar and select "Mixer' from the list.
Add Apple loops (pre-recorded music samples) to your mix. Push the "B" button on your keyboard to access your "Library" window, and click the "Loops" tab. Select loops from the list and drag them onto blank tracks with your mouse. Apple loops can fill in the gaps where you have missing instrumentation. For example, if your guitar recording needs drum accompaniment, you can add a pre-recorded drum loop.
Mix your tracks. Your "Volume" faders and "Pan" dials are your most fundamental mixing tools. These objects appear in the left column of each track. While your volume impacts the sound levels for each recording, the "Pan" dial impacts the placement of the recording. For example, if you drag your "Pan" dial to the left (counter-clockwise), your recordings on that particular track will move into the left channel, or speaker. Keep your bass, drums and lead vocals in the center, but try moving other tracks between the two channels to make your mix sound multi-dimensional.
Apply "Channel EQ" to mix your music on a deeper level. Click "Window" on your menu bar and select "Mixer" to access your main mixing board. At the top of each track, locate the box that reads "Channel EQ." Click any "Channel EQ" box to access the equalizer grid for that particular track. Using your grid, raise the bass frequencies, treble frequencies and mid-tones by dragging the line upward on the left (bass), right (treble) and center (mid) regions. For example, if a track requires more bass, try raising the line on the left side of the grid, or lowering it on the right side of the grid. To brighten a track, raise the line on the right side of the grid, or lower it on the left side of the grid. Continue to manipulate the line on each EQ grid to get the best sound for each track.
Mix your track automation. Click the "Track" menu on your menu bar and select "Track Automation" from the list to access your precise levels for each track. While "Volume" and "Pan" allow you to mix on a basic level, your track automation allows you to edit more precise aspects, such as the amount of resonance, delay and attack. Using the menu, select the aspect that you wish to edit and drag the corresponding line up or down to increase or decrease the presence of your selected aspect.
Add effects. If certain tracks sound thin or just seem to lack a certain ambiance, you can add custom effects. On your mixer menu, select any blank box beneath the "Inserts" menu heading on a track that you want to edit. When the pop-up menu appears, select an appropriate effect. For example, you can make synthesizer leads sound more characteristically electronic by adding a "Chorus" effect or "Echo." You can improve the quality of flat vocals using Logic's "Pitch" effect, and you can improve your guitars with "Distortion" or "Amp Modeling."