There are too many groovy mod 45s out there to mention, however James Royal's funky number "House of Jack" tops my ever-expanding list of personal favorites. The grand introduction sounds like something from an epic Tarantino showdown. The rest of this 1969 party anthem has an undeniably delightful "good time or bust" vibe throughout. Listen for yourself and see if you don't get hooked.
A 1965 release of Nat Adderley/Oscar Brown's "Work Song".