Whether you think of it as ii7, iv6, "minor seven flat five", the 'Tristan chord', or "half diminished", m7-5/m6 has a recognisable aural identity. This montage demonstrates the connotative coherence of the chord, as documented on pp.180-204, 566-573 in “Ten Little Title Tunes” (tagg.org/mmmsp/10Titles.html). [8'10"; 2011-10-30]