After 90 min: You can mix 3-4 songs together with beatmatching and smooth transitions using a DJ app.
Beatmatch Songs by Ear Without Tools
After 90 min: You can manually adjust the tempo of a song to match another by listening for beat alignment.
What you need
The 90-Minute Plan
Play two songs at slightly different speeds (one at 120 BPM, one at 122). Listen for the drift—the slower one pulls behind. This 'drift' is what you'll fix by speeding up the slower song.
Choose two songs at nearly identical tempos (within 1-2 BPM). Fade one out, fade the other in. Adjust the incoming song's tempo by ±2% until the beats line up. Record yourself.
Find songs that are 4-5 BPM apart. Use the tempo slider to bring the slower song up. Make micro-adjustments (0.5% at a time) by listening. Patience and precision matter more than speed.
Start song A. Cue up song B on headphones. Adjust B's tempo while listening through headphones to sync with A in the speakers. This is real-time DJing—it's hard at first.
Play song A, mix in song B (beatmatched), mix out B into song C (beatmatched). Do it twice. By the second round, you'll see your ear improving. This skill takes weeks to master but is essential.
Great DJs beatmatch by listening, not looking at waveforms. Develop your ear early or you'll depend on tools forever.
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After 90 min: You'll produce original beats suitable for sampling or licensing.
After 90 min: You'll mix tracks that sound radio-ready with clarity, depth, and professional polish.
After 90 min: You can sing a harmony line that complements a melody while someone sings the lead.