changed var declarations
and made tabbing consistent
used .sequencer:nth-child(4n) selector
instead of the quarter class
and cleaned up tabbing some more
added 0.1 to time var at assignment
and moved the time declaration into the onPlay function
used toggleClass instead of manual checking
removed the off class
stored sounds in an arra instead of object
and looped through to play each sound instead of
calling specifically

removed unneeded variables