Hi we would need input voltage from supply tested. We need all three leads of the transistor. Then all 8 pins of the IC. Be sure to label the IC in it’s proper order as well as the named leads for each transistor leg so we know exactly what is going on. Google the datasheet for the transistor so you know the pin out names and supply us with the voltages for each.
Please see our Guides page if you have any questions. It can be accessed easily from the Home Page by hitting the Guides button or it is also here in the forum. The Crash Course explains voltages. Voltages take a lot of guess work out of the equation.
Please supply photos as well showing the build.
Finally a description of how it currently sounds and what transistor type was used would also be helpful.