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As pointed by Janata & Grafton (2003), three research domains in psychology and neuroscience are particularly pertinent to understanding the neural basis for sequencing behaviors in music: they are timing, attention and sequence learning. In fact, music can be thought of as a sequence of events that are patterned in time and a 'feature space' that is multidimensional and consists of both motor and sensory information. Motor patterns determine how we position effectors in space, such as fingers on piano keys, whereas sensory patterns reflect the organization of auditory objects, such as notes or sets of notes in time when we hear melodies and chords, respectively. Temporal and spatial sequence production in humans yield activations in many brain regions including the cerebellum, SMA, PMC, basal ganglia and parietal cortex, which are richly interconnected. There possibly lies a core circuit underlying sequenced behaviors in which different levels of complexity show considerable overlap in some regions such as the SMC and SMA, whereas higher levels of complexity are related with overlap and greater activations in the cerebellum, basal ganglia, thalamus, PMC (premotor cortex), VLPFC (ventrolateral prefrontal cortex), IPS (intraparietal sulcus) and precuneus. All these regions have also been related with music processing (Janata & Grafton, 2003).