Heat Exchange "Can You Tell Me - Inferno" 1972 single 45" Ontario Psych Fuzz br br Heat Exchange, a Toronto-based rock group from the 1970's, released a series of singles. One made it into the Top 10 and they were met with some success and a substantial recording contract. This, their debut single peaked at No. 87 on 20th May 1972. br br While this particular single shows their more commercial side, they were an incredibly creative, experimental group, often incorporating interesting, baroque elements and unusual rhythms. br br Craig Carmody: sax, flute (resides in British Columbia, Canada today, with his wife, three children and one grand-child.