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Fredrik Åkesson (left) and Mikael Åkerfeldt (right)

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In this video lesson, Opeth guitarists Mikael Åkerfeldt and Fredrik Åkesson take you through their 2008 track Heir Apparent. The song is a seven-minute epic, laden with all the dual guitars, acoustic interludes and time signature changes we've come to expect from the Swedish metallers.

Opeth are fairly unique in the metal world in that they use standard tuning almost exclusively. "We don't need to tune down to sound heavy," says frontman Åkerfeldt.

Nor, it would seem, do Opeth need to use giant amps to sound heavy – the guys recorded this entire tutorial using Roland Micro Cube amps.