There's a reason Dark Side Of The Moon occupied the top 100 albums for a record number of years.
$30 lunch bags of weed.
Do yourselves a favour kiddies. Roll a few 3 paperies and sit down and listen to The Dark Side Of The Moon.
Do the same with Mastodon currently, heavily influenced by PF/Yes/King Crimson etc but with a metallic edge. Their recent stuff is basically prog rock and good s**t.