The first sample is the one that starts with the music.  Don't be shy - comment if you want -- I need to know for the second book 'Lead Weight.' 

Sample #1  is on audiobooks and starts at the beginning of the story https://www.audiobooks.com/audiobook/chasing-mercury/306482

Sample # 2 is on audible/amazon and starts a few chapters in. 

https://www.amazon.com/Chasing-Mercury/dp/B075XRFYRR/ref=tmm_aud_swatch_0?_encoding=UTF8&qid=&sr= 

Which is most likely to make you want to read  or hear there of the book -- starting randomly or starting at the beginning?