In one study, most people said that their investment in music stems from its ability to convey emotions (Gebauer, Kringelbach, and Vuust 2012). Studies have implied that music can arouse basic emotions such as happiness (Gebauer, Kringelbach, and Vuust 2012.) Music with a fast tempo and a major mode is considered and reacted to as happy music, while music with a slow tempo and a minor way is considered sad (Gebauer, Kringelbach, and Vuust 2012.) This effect has been shown through fMRI imaging while listening to different genres of music and questionnaires on participants (Gebauer, Kringelbach, and Vuust 2012). A study conducted by Greasly and Lamont was able to demonstrate that there are two broad types of listeners; less involved and more involved (Greasley and Lamont 2006). Less engaged listeners were classified as listening to music only a few hours a week to pass the time, and were less likely to make the music selection themselves (Greasley and Lamont 2006). listeners reported listening to music up to 40 hours a week and were more likely to choose the music selection themselves (Greasley and Lamont 2006). The main difference found between the two types of listeners was the ability of music to influence listeners' mood (Greasley and Lamont 2006.) Many studies have focused on the effects of familiarity and response to music. Research conducted by Pereira was able to demonstrate that familiarity is an important aspect in emotional involvement due to increased activity in the limbic and paralimbic regions of the brain (Pereira, Teixeira, Figueiredo, Xavier, Castro, Brattico 2011.). Another study suggested that familiarity plays a more important role in the release of dopamine in areas of the brain associated with reward expectation (Salimpoo...... middle of paper...... Music and emotions in the brain : familiarity issues. Plos ONE, 6(11), 1-9. doi:10.1371/journal.pone.0027241Rana, S., Akhtar, N., & North, A. (2011). 1), 48-67.Salimpoor, V.N., Benovoy, M., Larcher, K., Dagher, A., & Zatorre, R.J. (2011). Peak emotion in music. Nature Neuroscience, 14(2), 257 -262 doi:10.1038/nn.2726(Salimpoor, Benovoy, Larcher, Dagher, and Zatorre 2011) Thaut, M.H., Gardiner, J.C., Holmberg, D., Horwitz, J., Kent, L., Andrews, G., & McIntosh, GR (2009) Neurological music therapy improves executive function and emotional adjustment in traumatic brain injury rehabilitation Annals of the New York Academy of Sciences, 1169406-. doi:10.1111/j.1749-6632.2009. 04585.x