Instruments 
Musical instruments in a dream represent harmony. Technical instruments are symbols of your work or an emotional state which you associate with those tasks.
Cassette Tape
To dream of a cassette tape is an unconscious message of personal growth, there is a tendency to replay words or phrases from childhood in our head without realizing that we are doing it. Dreaming of a cassette tape continuously playing is indicating that programming from our past is having negative influence in our waking life. It may be time to witness the thoughts that you are thinking and change your life accordingly.
Marching Band
A marching band in a dream represents your connection to others. To make a marching band harmonize takes teamwork as well as a second sense for understanding others.
To march along with the band in your dream indicates that you feel conforming to others is important in your life. You may feel great joy in your camaraderie with the group. If you feel that the band is marching you along, you may be struggling with your wish to escape conformity in your life.
Queen of Hearts
To dream of the queen of hearts indicates either the opportunity to meet your mate and fall in love, or to renew a love that may have been flagging through unawareness and inattentiveness.
There is a sense of trepidation if the queen of hearts appears in a dream, as though yielding to love is a great risk. The message is to yield anyway and open up to a realm of possibility only previously imagined.
Ice Cream Truck
To dream of an ice cream truck indicates a pleasurable event may be coming your way. To dream of an ice cream truck stopping outside your door suggests a joyful moment is in imminent, packed with exciting surprises specifically for your enjoyment. Buying ice cream from a stationary ice cream truck implies a special moment to be savored. To watch an ice cream truck pass you by in a dream indicates a timing issue and is a reminder to come back to the moment and be clearer in your intentions so as to catch the next opportunity coming your way.
Jack in the Box
To dream of a Jack in the Box suggests that although you may be expecting to hear some news you will still have a strong reaction to it. A closed Jack in the Box implies that you may have been attempting to conceal your emotional reaction to recent news. You are being reminded of the power of truth and that although you may think you are helping, a genuine response is more satisfying to everyone involved.
Recording Studio
To dream that you are in a recording studio suggests that you may have a future in music.
To be in a recording studio in a dream may also indicate that you desire to be heard. It may be time to make your thoughts and ideas known.