After creating a mashup of all of the clips that I have pulled of Andrew singing, I decided to do the same with all of the clips that I have pulled of Luke singing.
The clips are not in any particular order, maybe with a hint of some alphabetical sorting based on the various filenames. Once the clips were combined, I did a little bit of trimming to nip/tuck some of the really high peaks in amplitude.
The following is the resulting mashup: