Sentence:  But Humphrey Bogart's Philip Marlowe has no sax sound tagging along behind him, and when love interest Lauren Bacall makes her entrance at a swanky nightspot, a <WSD>rinky-dink</WSD> piano accompanies her sway; there's not a sax in sight (or sound). 
Meaning of the word marked with <WSD> tags:  Tinkling and tinny.