Get ready to feel moody with "Waltz in B-Flat Major, "Gertrude’s Dream"" by Lisa Spector. With a 146 BPM and 4 time signature, the rhythms flow in A♯/B♭ major. Spanning 4 minutes and 49 seconds, "Waltz in B-Flat Major, "Gertrude’s Dream"" radiates low energy from start to finish. Let the moody vibes of this track carry you away.