One of the primary challenges in any audio-related course is acquiring source material for manipulation. This challenge becomes even more pronounced during online classes when students can't easily share physical materials. Here are some resources: ## Free Resources - [The Cambridge Music Technology Multitrack Library](https://cambridge-mt.com/ms/mtk/) - The Cambridge Multitrack Library stands out as an exceptional resource because it offers a curated selection of multi-tracks spanning various genres, and the best part is that it's entirely free.  - I recommend starting with a mix that includes a tutorial. Click [this link](https://docs.google.com/spreadsheets/d/1Hhp_Ke-bjtv8hldfo449D-27oaWVMdjNVIcMiIaDh5Q/edit?gid=0#gid=0) for such mixes.  - [Home Studio Corner - Mix Together](https://www.homestudiocorner.com/mt) - Run by Joe Gilder, this site offers a series called "Mix Together," providing different multitracks for training purposes, along with tutorial videos for comparison and learning. - [Telefunken Live From The Lab](https://www.telefunken-elektroakustik.com/livefromthelab/) - This site offers a great collection of multitracks, all sorted and ready for use, primarily recorded with Telefunken microphones. The audio files are available in WAV format and were recorded at 24bit/48KHz sample rate​​. - [Lewitt Audio](https://www.lewitt-audio.com/mix) - Known for their microphone technology, Lewitt Audio runs music challenges and mixing contests. Even after contests end, the multitracks are available for download, providing a great opportunity to practice mixing skills​​. ## Paid Resources - [PureMix](https://www.puremix.com/) - This site provides high-quality audio files and focuses on professional recording, producing, mixing, and mastering. It's an excellent resource for learning from experienced engineers, though not all tutorials come with exercise files​​. - [Nail the Mix](https://www.nailthemix.com/) - This is a specialized platform for rock and metal music producers, offering mixing contests and multitracks to help fast-track learning. The site allows the use of these mixes to build a portfolio and acquire clients​​. - [MultiTracks](https://www.multitracks.com/) - This website is designed to assist churches in enhancing their worship music. It provides multitracks for various gospel and worship music, allowing for practice in both studio and live mixing​​. - [Art and Science of Sound](https://www.artandscienceofsound.com/) - Managed by Alan Parsons, this website mainly offers rock music multitracks recorded in prestigious studios. It's an excellent resource for learning rock music mixing​​. - [Pro Mix Academy](https://www.puremix.com/) - Working with world-class mixing engineers across various genres, Pro Mix Academy offers high-quality multitracks and comprehensive audio engineering training​​. ## Curated Lists Here are a list of resources that others have curated. - [Beyond the Speakers](https://behindthespeakers.com/300-free-multitracks/)