You're about 10 years late for the best music stores, unfortunately. 48th street isn't what it once was.
Apparently Larry Hartke runs the bass department in the Sam Ash over there, which is cool and all, but good luck trying a bass. They're bolted to the walls and the employees hide from you.
The guitar center in Times Square is huge, but ridiculously crowded. The one in Union square has a well maintained but small bass section. Really nothing special. The retail instrument stores in New York really aren't anything special nowadays.
As for good pizza, it's all over the place.
Never mind the pizza. If you're interested in the greatest sandwiches known to man, you go to Sal's in Astoria. Get there before 2ish or they'll run out of bread.
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