A small Mac and iOS software maker writes about audio apps like Capo and TapeDeck, signal processing, and Apple platform issues.
HN commenters mostly recommend its Capo app, praising its chord and beat detection for working out songs by ear, with Mac and iOS only.
YouTube is not the service provider when the video is accessed as an integrated part of the OP's website. That YouTube take action against infringement doesn't mean that you're not infringing by embedding copyright content available there on your own site (particularly as it's commercial).
http://www.out-law.com/page-7235, http://www.theregister.co.uk/2006/08/29/guitar_sites_under_fire/ give details of take downs, a few years ago, around the provision of guitar tabs. Note that the MPA moved the next year to make specific provision for licensing of guitar tabs, http://arstechnica.com/tech-policy/2007/04/legal-guitar-tabs-return-to-the-web/.
I suspect Capo, http://supermegaultragroovy.com/products/Capo/, operates the way it appears to because they can circumvent many things (that copyright in the music or production of the tracks would restrict) by using the users purchased tracks as the source for the information.
Soundslice looks awesome but if they've not yet consulted with copyright experts then I fear they may be looking at a lawsuit imminently.
Choosing Yesterday [which is beautifully played] as one of the example tracks was pretty ballsy. FWIW the YouTube video links to Bandcamp where an album of covers are available - Bandcamp are obviously aware of this sort of issue, they can't sell unlicensed covers lawfully. Bandcamp T&C (http://bandcamp.com/faq#mixtape) specifically rule out the use of their service for covers. $0.091 is the current fee per digital play of the…
Apple used to have a "Music Memos" app for recording musical memos. It also identified chords and allowed you to add auto-generated bass and/or drums. Sadly it was removed a year or two back and users were told to use garage band instead.
For iPhone and Mac, there's Capo which will identify chords and gives a pretty spectrograph for identifying individual notes and tabbing it out.
http://supermegaultragroovy.com/products/capo/
Another option (windows, mac, linux) is Transcribe!
https://www.seventhstring.com/xscribe/overview.html
Been having a lot of success with Capo [1] recently - excellent beat and chord detection (though it often overcomplicates simple fifths and sus4s assuming they're much more full voiced than they are); also provides a time/frequency intensity view that you can use to pick out melody lines which it automatically translates into tab.
[1] http://supermegaultragroovy.com/products/capo/
Tangentially, if you want to get chords from a song (and can't find them already written online), Capo does a pretty great job at it and is very easy to use. Mac/iOS only, but the best I've seen.
https://supermegaultragroovy.com/products/capo/
Neat! I agree with others you should make an iTunes plugin, or perhaps even a standalone app with more features to help learn songs, like http://supermegaultragroovy.com/products/Capo/
Great job. I also really like Capo for OS X: http://supermegaultragroovy.com/products/Capo/index.html
Edit: can anyone recommend a good, free chord dictionary for Android?