What the best kind of music is for a presentation depends on the subject matter and target audience, but there are certain sounds that are more commonly used than others. These would generally be with the intention to create a positive vibe, and so the music would be accessible and uplifting, although if the content is serious and thought-provoking, the songs should reflect this too.
Within a presentation, the music is usually not the main focus, and is instead played in the background as a mood enhancer, but not to distract from the primary content. This means that they would be instrumental and light, often of songs that are not known to the listener, although sometimes instrumental versions of songs that manipulate a positive feeling are used.
At times, more direct music may be played, such as over a video presentation, which might include lyrics relevant to what is being said, and takes the audience on a journey to the desired place less subtly. In 2016 Eventbrite listed the ten most popular songs played at conferences, and found these to be famous uplifting tunes, from Happy by Pharrell Williams, through Get Lucky by Daft Punk, to Sex On Fire by Kings Of Leon. These however are more likely used between presentations than in them.
There are many more tracks which are available specifically to aid with presentations, such as to be played over the top of slideshows, Keynote or PowerPoint, and most of these describe themselves using words such as 'success' and 'motivational'.