An "-아/어" form leading into 느끼다 "feel". Some lines chain the action to the feeling: go and see for yourself and feel it, ride the groove lightly and do it as you feel it, feel this moment that won't come again. Others use the fixed 에 대해 느끼다, feeling something about a subject — the authority society feels a job carries, the burden I feel about my age. 느끼다 covers both physical sensation and emotional impression, and both are here.