Create a new project. Open your "Applications" folder and locate the "Logic" software. When you open it, create a new project by clicking "File" on the menu bar and selecting "New."
Plug in your instruments. Your method for connecting depends on the equipment you have at your disposal. If you own a USB interface, plug all of your instruments into the interface and plug the interface into your USB port. If you own standard instruments like guitars and keyboards, plug in using a standard instrument cable with a 1/8-inch adapter for your computer's "Line-In" port. If using Musical Instrument Digital Interface (MIDI) instruments, connect using a MIDI cable with a MIDI-to-USB adapter.
Set up Logic to recognize your instruments. Click "Logic Pro" on the menu bar and select "Preferences" from the drop-down menu. Select the "Audio" option and choose your interface (if using a USB interface) from the "Device" menu. If connecting an instrument cable to your "Line-In" port, select "Built-In" input. Click "Apply Changes" when you finish.
Create a new track for recording. Your tracks appear as horizontal spaces with names like "Audio 1" and "Inst 1." Use "Audio" tracks to record from basic instruments like guitars and keyboards, and "Inst" tracks to record MIDI data from digital instruments like synthesizers and drum machines. To create a new track, click the "Track" tab near the top of the "Arrange" window (the main window that opens in Logic) and select "New" from the drop-down menu. When the pop-up menu appears, select "Audio" for raw recording or "Software Instrument" for MIDI recording.
Select an instrument setting. If using a MIDI track, assign an instrument sound to your track before you record. Double-click the track name to open the mixer, and then click and hold the "Input" button on the mixer to see a list of available software synthesizers. Select a synthesizer from the list and adjust the settings and presets on the pop-up window until you find just the right sound. If recording a simple audio track, you can ignore this step.
Begin recording. Select your track by clicking the title once, and click the "Record" button at the very bottom of the "Arrange" window. Record your sequence as the metronome ticks and press "Record" a second time to stop recording. To speed up or slow down your song, adjust the "Tempo" setting at the bottom of the "Arrange" window.
Repeat Steps 4 through 6 for as many additional instruments and voice recordings as you want, until you have an entire song. For example, you might record a guitar riff on one track, apply a punchy bass line on the second track and sing through a microphone on the third track. As long as you align the recordings on top of one another in their respective tracks, they will play together in perfect time.
Edit your tracks. Double-click any track name to access the mixer, then click the blank buttons that appear below "Inserts" on the track you want to edit. You will see a list of effects features, like "Distortion," "Dynamics," "Pitch" and "Reverb." Click these effects to access them, and apply them as needed.
Bounce your project. "Bouncing" refers to exporting your project as a music file, like an MP3. Click "File" on the menu bar and select "Bounce." A pop-up window will appear and ask you to select your format. You can save your beat as an MP3, M4A, AIFF or choose from other available formats. Click "Bounce" after you choose your format.