The phrase "a backdrop of a block" is correct and usable in written English.
It can be used to describe a setting or context that is defined by a physical block or structure, often in artistic or architectural discussions.
Example: "The artist painted a vibrant mural against a backdrop of a block, highlighting the contrast between the colors and the concrete."
Alternatives: "a setting of a block" or "a background of a block".
The accepted cover, designed by Aimee Macauley, features a photo of Nas as a child superimposed over a backdrop of a New York city block, taken by Danny Clinch.
The policy was introduced against a backdrop of a major shortage in qualified health staff.
Shot in Leeds, "1974" and its follow-ups delve into the notoriety of "the North" against a backdrop of block houses, humble sitting rooms, nuclear power plants, offices and pubs.
Told in the voices of those 'with elsewhere in their blood', it conjures up their interlocking lives against a backdrop of tower blocks, riots and a murdered off-duty soldier.
Crack addicts, prostitutes and the homeless mill around before a backdrop of dilapidated tower blocks and marauding seagulls.
"What's happening here is happening all around the country," Mr. Obama said against a backdrop of three hulking engine blocks.
Traditionally Hollywood's grandest event, it the ceremony was conducted against a backdrop of antiwar demonstrations just blocks away that threatened to further disrupt the proceedings.
The mood, which in a normal year reaches giddy expectation, was soured by the increasingly destructive conflict in Iraq and by pangs of conscience among film industry figures, and the event -- traditionally Hollywood's grandest -- was held against a backdrop of antiwar demonstrations just blocks away that threatened to further disrupt the usually benign proceedings.
Set against a backdrop of Soviet-era concrete blocks and Spanish colonial churches, Pratt's new book, Música en Santiago de Cuba, is an ethnographic study of the city's rich culture, taking an inside look at the passionate and conflicted relationship between Cuban musicians and their homeland.
Cupertino flicking the content blocking switch is set against a backdrop of increased uptake of ad blocking software in recent years, and growing awareness of privacy issues since the 2013 Snowden revelations — which revealed the extent of government mass surveillance programs and how they systematically harvest data from commercial tech companies.
