This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Recorded on multiple tracks

"Later I 'multitracked' on my own by recording bas and drums onto one stereo ( "hifi stereo") casettedeck, then playing the tape back and play along the piano line and record that 'mix' on deck two; I never went further than four to and fro bounces, as it would make the drums lose too much of its high freq content."