Toolbox submission

blues_solo.py

@@ -31,6 +31,44 @@ def add_note(out, instr, key_num, duration, bpm, volume):
 blues_scale = [25, 28, 30, 31, 32, 35, 37, 40, 42, 43, 44, 47, 49, 52, 54, 55, 56, 59, 61]
 beats_per_minute = 45				# Let's make a slow blues solo
 
-add_note(solo, bass, blues_scale[0], 1.0, beats_per_minute, 1.0)
 
-solo >> "blues_solo.wav"
+roots = [0, 6, 12]
+curr_note = choice(roots)
+add_note(solo, bass, blues_scale[curr_note], 1.0, beats_per_minute, 1.0)
+
+licks = [[[1, 0.5], [1, 0.5], [1, 0.5], [1, 0.5]],
+			[[-1, 0.5], [-1, 0.5], [-1, 1]],
+			[[2, 0.5], [2, 0.5], [2, 0.75], [-1, 0.25]],
+			[[2, 0.5*1.1], [-1, 0.5*0.9], [2, 0.5*1.1], [-1, 0.5*0.9]],
+			[[-2, 1], [0,1]],
+			[[3, 2]],
+			[[0, 0.3], [0, 0.3], [0, 0.3], [2, 1.1]]]
+
+for i in range(16):
+    lick = choice(licks)
+    for note in lick:
+    	if curr_note <= 0:
+        	curr_note = 1
+        elif curr_note >= len(blues_scale) - 1:
+        	curr_note = choice(range(len(blues_scale) - 1))
+        else:
+        	curr_note += note[0]
+        if i > 10 and i < 14:
+        	add_note(solo, bass, blues_scale[curr_note], note[1], beats_per_minute, 1.0 + float(i)/4)
+        else:
+        	add_note(solo, bass, blues_scale[curr_note], note[1], beats_per_minute, 1.0)
+
+# solo >> "blues_solo.wav"
+
+backing_track = AudioStream(sampling_rate, 1)
+Wavefile.read('backing.wav', backing_track)
+
+m = Mixer()
+
+solo *= 0.4             # adjust relative volumes to taste
+backing_track *= 2.0
+
+m.add(2.25, 0, solo)    # delay the solo to match up with backing track    
+m.add(0, 0, backing_track)
+
+m.getStream(500.0) >> "slow_blues.wav"