Although it doesn't have a web browser interface, GNU Solfege is lightweight, comprehensive ear training software. It has scales I'd never heard of, like the Hu

Although it doesn't have a web browser interface, GNU Solfege is lightweight, comprehensive ear training software. It has scales I'd never heard of, like the Hungarian scale. Actually using scales or chords is something else again, and the best approach is probably just repertoire - Bach's Goldberg Variations, Bartok's For Children cycle, transcribing Bill Evans, Liszt's concert studies, etc.