According to RYM.com here are the places where the artists in my music collection are from. London is the clear winner in my list:
London, City of London, GB (45)
Los Angeles, CA, US (34)
New York, NY, US (20)
Chicago, IL, US (9)
Birmingham, Birmingham, GB (8)
Manchester, Manchester, GB (8)
San Francisco, CA, US (8)
Liverpool, Liverpool, GB (7)
Detroit, MI, US (6)
Glasgow, Glasgow City, GB (5)
Newark, NJ, US (5)
Manhattan, NY, US (5)
Toronto, ON, CA (4)
Atlanta, GA, US (4)
Brooklyn, NY, US (4)
Houston, TX, US (4)
Sydney, New South Wales, AU (3)
Hamburg, Hamburg, DE (3)
Sheffield, Sheffield, GB (3)
Dublin, IE (3)
Anaheim, CA, US (3)
Pasadena, CA, US (3)
Washington, DC, US (3)
Jacksonville, FL, US (3)
Kansas City, KS, US (3)
Baltimore, MD, US (3)
Minneapolis, MN, US (3)
Philadelphia, PA, US (3)
Montréal, QC, CA (2)
Brighton, GB (2)
Deptford, GB (2)
Guildford, GB (2)
Oxford, GB (2)
Saint Albans, GB (2)
Woking, GB (2)
Coventry, Coventry, GB (2)
Hounslow, Hounslow, GB (2)
Leeds, Leeds, GB (2)
Newcastle upon Tyne, Newcastle upon Tyne, GB (2)
Reading, Reading, GB (2)
Paisley, Renfrewshire, GB (2)
Southampton, Southampton, GB (2)
York, York, GB (2)
Limerick, IE (2)
Reykjavík, IS (2)
Wellington, NZ (2)
Stockholm, Stockholms Län, SE (2)
Berkeley, CA, US (2)
Compton, CA, US (2)
Glendale, CA, US (2)
Miami, FL, US (2)
Athens, GA, US (2)
New Orleans, LA, US (2)
Boston, MA, US (2)
St Louis, MO, US (2)
Sayreville, NJ, US (2)
Forest Hills, NY, US (2)
Queens, NY, US (2)
Cleveland, OH, US (2)
Memphis, TN, US (2)
Austin, TX, US (2)
Dallas, TX, US (2)
Virginia Beach, VA, US (2)
Seattle, WA, US (2)
Raiding, Burgenland, AT (1)
Rohrau, Niederosterreich, AT (1)
Salzburg, Salzburg, AT (1)
Melbourne, Victoria, AU (1)
Bridgetown, BB (1)
Aalst, BE (1)
Liberchies, Hainaut, BE (1)
Пазарджик, Пазарджик, BG (1)
Fort MacLeod, AB, CA (1)
Victoria, BC, CA (1)
Belleville, ON, CA (1)
Kingston, ON, CA (1)
Ottawa, ON, CA (1)
Barranquilla, Atlantico, CO (1)
Heidelberg, DE (1)
Hannover, Niedersachsen, DE (1)
Bonn, Nordrhein-Westfalen, DE (1)
Düsseldorf, Nordrhein-Westfalen, DE (1)
Köln, Nordrhein-Westfalen, DE (1)
Eisenach, Thüringen, DE (1)
Paide, EE (1)
Lyon, FR (1)
Paris, FR (1)
Saint-Germain-en-Laye, FR (1)
Barking, GB (1)
Battle, GB (1)
Beckenham, GB (1)
Bow, GB (1)
Braintree, GB (1)
Brixton, GB (1)
Burton upon Trent, GB (1)
Canterbury, GB (1)
Chingford, GB (1)
Colchester, GB (1)
Crawley, GB (1)
Dover, GB (1)
Dunstable, GB (1)
Godalming, GB (1)
Harefield, GB (1)
Helmsley, GB (1)
Hemel Hempstead, GB (1)
Hoylake, GB (1)
Leith, GB (1)
Northwich, GB (1)
Paddington, GB (1)
Pinner, GB (1)
Reigate, GB (1)
Ripley, GB (1)
Staines, GB (1)
Stourbridge, GB (1)
Teignmouth, GB (1)
Thames Ditton, GB (1)
Walton, GB (1)
Worthing, GB (1)
Belfast, Belfast, GB (1)
Bexleyheath, Bexley, GB (1)
Bolton, Bolton, GB (1)
Bradford, Bradford, GB (1)
Wembley, Brent, GB (1)
Aylesbury, Buckinghamshire, GB (1)
Blackwood, Caerphilly, GB (1)
Camden Town, Camden, GB (1)
Caerdydd, Cardiff, GB (1)
Edinburgh, City of Edinburgh, GB (1)
Downpatrick, Down, GB (1)
Dundee, Dundee City, GB (1)
Tidworth, England, GB (1)
Enniskillen, Fermanagh, GB (1)
Dunfermline, Fife, GB (1)
King's Cross, Greater London, GB (1)
Hammersmith, Hammersmith and Fulham, GB (1)
Hertford, Hertford, GB (1)
Kensington, Kensington and Chelsea, GB (1)
Huddersfield, Kirklees, GB (1)
Leicester, Leicester, GB (1)
Luton, Luton, GB (1)
Portsmouth, Portsmouth, GB (1)
Cwmaman, Rhondda Cynon Taff, GB (1)
Salford, Salford, GB (1)
Butleigh, Somerset, GB (1)
Southend-on-Sea, Southend-on-Sea, GB (1)
Camberwell, Southwark, GB (1)
Stoke-on-Trent, Stoke-on-Trent, GB (1)
Virginia Water, Surrey, GB (1)
Torquay, Torbay, GB (1)
Wigan, Wigan, GB (1)
Aston, GB (1)
Prestwich, GB (1)
Kutaisi, GE (1)
Gweedore, IE (1)
Roma, Lazio, IT (1)
Milano, Lombardia, IT (1)
Pesaro, Marche, IT (1)
Civitella in Val di Chiana, Toscana, IT (1)
Kingston, JM (1)
Nine Mile, Saint Ann Parish, JM (1)
Kōchi, Kochi, JP (1)
Atami, Shizuoka, JP (1)
Taurage, LT (1)
Yangon, Yangon, MM (1)
Ciudad de México, Distrito Federal, MX (1)
Zundert, Noord-Brabant, NL (1)
Bergen, Hordaland, NO (1)
Oslo, Oslo, NO (1)
Colón, Colon, PA (1)
Sochaczew gmina, Mazowieckie, PL (1)
Göteborg, SE (1)
Halmstad, SE (1)
Skellefteå, SE (1)
Gothenburg, Västra Götaland, SE (1)
Fagersta, SE (1)
Fyzabad, County of Saint Patrick, TT (1)
Zanzibar Town, Zanzibar Urban/West, TZ (1)
Krasnoye, Vinnyts'ka, UA (1)
Birmingham, AL, US (1)
Montgomery, AL, US (1)
Prattville, AL, US (1)
Elaine, AR, US (1)
Forrest City, AR, US (1)
Kingsland, AR, US (1)
Nogales, AZ, US (1)
Corte Madera, CA, US (1)
El Cerrito, CA, US (1)
Fullerton, CA, US (1)
Hawthorne, CA, US (1)
Hollywood, CA, US (1)
Inglewood, CA, US (1)
Long Beach, CA, US (1)
Malibu, CA, US (1)
Oakland, CA, US (1)
Palm Desert, CA, US (1)
Pomona, CA, US (1)
San Diego, CA, US (1)
San Jose, CA, US (1)
Vacaville, CA, US (1)
Denver, CO, US (1)
Gainesville, FL, US (1)
Tallahassee, FL, US (1)
Albany, GA, US (1)
Dawson, GA, US (1)
Macon, GA, US (1)
Thomson, GA, US (1)
Hauula, HI, US (1)
Honolulu, HI, US (1)
Alton, IL, US (1)
Gary, IN, US (1)
Richmond, IN, US (1)
Marysville, KS, US (1)
Topeka, KS, US (1)
Ferriday, LA, US (1)
Ruston, LA, US (1)
Waldorf, MD, US (1)
Bay City, MI, US (1)
Flint, MI, US (1)
Saginaw, MI, US (1)
Duluth, MN, US (1)
Kansas City, MO, US (1)
Kennett, MO, US (1)
Saint Joseph, MO, US (1)
Clarksdale, MS, US (1)
Coahoma, MS, US (1)
Indianola, MS, US (1)
Itta Bena, MS, US (1)
Tupelo, MS, US (1)
Hamlet, NC, US (1)
Newton, NC, US (1)
Rocky Mount, NC, US (1)
Tryon, NC, US (1)
Nashua, NH, US (1)
Sunapee, NH, US (1)
East Orange, NJ, US (1)
Freehold, NJ, US (1)
Hoboken, NJ, US (1)
Jersey City, NJ, US (1)
Montclair, NJ, US (1)
Princeton, NJ, US (1)
South Orange, NJ, US (1)
Las Vegas, NV, US (1)
Amityville, NY, US (1)
Floral Park, NY, US (1)
Freeport, NY, US (1)
Staten Island, NY, US (1)
Stony Brook, NY, US (1)
Canton, OH, US (1)
Columbus, OH, US (1)
Oklahoma City, OK, US (1)
Allentown, PA, US (1)
Doylestown, PA, US (1)
West Chester, PA, US (1)
Pawtucket, RI, US (1)
Providence, RI, US (1)
Barnwell, SC, US (1)
Chattanooga, TN, US (1)
Covington, TN, US (1)
Mount Juliet, TN, US (1)
Rosemark, TN, US (1)
Fort Worth, TX, US (1)
Galveston, TX, US (1)
Lubbock, TX, US (1)
Port Arthur, TX, US (1)
Mechanicsville, VA, US (1)
Norfolk, VA, US (1)
Portsmouth, VA, US (1)
Williamsburg, VA, US (1)
Aberdeen, WA, US (1)
Bellevue, WA, US (1)
Issaquah, WA, US (1)
Milwaukee, WI, US (1)
Slab Fork, WV, US (1)
Ladysmith, KwaZulu Natal, ZA (1)